GFI Software GFI LanGuard 2011 Network Security Software Administration and Configuration Manual
تبلیغات
تبلیغات
GFI Product Manual
Administration and Configuration
Manual
http://www.gfi.com [email protected]
The information and content in this document is provided for informational purposes only and is provided "as is" with no warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability, fitness for a particular purpose, and non–infringement. GFI Software is not liable for any damages, including any consequential damages, of any kind that may result from the use of this document. The information is obtained from publicly available sources. Though reasonable effort has been made to ensure the accuracy of the data provided, GFI makes no claim, promise or guarantee about the completeness, accuracy, recency or adequacy of information and is not responsible for misprints, out–of–date information, or errors. GFI makes no warranty, express or implied, and assumes no legal liability or responsibility for the accuracy or completeness of any information contained in this document.
If you believe there are any factual errors in this document, please contact us and we will review your concerns as soon as practical.
All product and company names herein may be trademarks of their respective owners.
GFI LanGuard 2011 is copyright of GFI SOFTWARE Ltd. – 1999–2011 GFI Software Ltd. All rights reserved.
Last updated: August 12, 2011
Version: LANSS–ACM–EN–01.00.01
Contents
1.1 Introduction to GFI LanGuard ..................................................... 1
1.2 About this manual .................................................................. 1
1.3 GFI LanGuard components ......................................................... 3
1.4 Vulnerability management strategy .............................................. 4
2.1 Introduction ......................................................................... 5
2.2 Deploying agents .................................................................... 5
2.3 Configuring Agents .................................................................. 8
3.1 Introduction ....................................................................... 11
3.2 Performing a manual audit ...................................................... 11
3.3 Scheduled scan .................................................................... 16
3.4 Setting up scheduled scans ...................................................... 17
3.5 Audit result summary ............................................................ 23
3.6 Audit result details ............................................................... 26
4.1 Introduction ....................................................................... 37
4.2 Computers view ................................................................... 43
4.3 History view ....................................................................... 45
4.4 Vulnerabilities view .............................................................. 46
4.5 Patches view ....................................................................... 47
4.6 Ports view .......................................................................... 48
4.7 Software view ..................................................................... 49
4.8 Hardware view .................................................................... 50
4.9 System Information ............................................................... 51
4.10 Display results ..................................................................... 51
4.11 Configure credentials ............................................................ 52
4.12 Monitoring activity ................................................................ 53
5.1 Introduction ....................................................................... 57
5.2 Automatic-Remediation .......................................................... 57
5.3 Remediation center .............................................................. 65
5.4 Deploy security patches and service packs ................................... 67
5.5 Uninstall software patches and service packs ................................ 68
5.6 Deploy custom software ......................................................... 69
5.7 Uninstall custom applications ................................................... 71
5.8 Malware protection actions ..................................................... 72
5.9 Using remote support ............................................................ 73
5.10 Remediation Jobs ................................................................. 74
6.1 Introduction ....................................................................... 77
6.2 Scheduled Scans ................................................................... 77
6.3 Applications inventory ........................................................... 79
6.4 Configuring security updates .................................................... 83
6.5 Configuring alerting options ..................................................... 87
6.6 Database maintenance options ................................................. 88
6.7 Program updates .................................................................. 93
6.8 Importing and Exporting Settings ............................................... 97
7.1 Introduction ...................................................................... 103
7.2 Available reports ................................................................. 103
7.3 Generating reports .............................................................. 105
7.4 Custom reports ................................................................... 108
7.5 Full text searching ............................................................... 110
8.1 Introduction ...................................................................... 113
8.2 Scanning profile description .................................................... 113
8.3 Configure Vulnerabilities Assessment options ............................... 117
8.4 Configure Network & Software Audit options ................................ 126
8.5 Configuring the security scanning options ................................... 137
9.1 Introduction ...................................................................... 139
9.2 DNS lookup ........................................................................ 139
9.3 Traceroute ........................................................................ 141
9.4 Whois .............................................................................. 142
9.5 Enumerate computers ........................................................... 143
9.6 Enumerate users ................................................................. 145
9.7 SNMP Auditing .................................................................... 146
9.8 SNMP Walk ........................................................................ 147
9.9 SQL Server Audit ................................................................. 148
10 Using GFI LanGuard from the command line 149
10.1 Introduction ...................................................................... 149
10.2 Using the command line scanning tool: lnsscmd.exe ....................... 149
10.3 Using the command line patch deployment tool: deploycmd.exe ........ 150
10.4 Using the command line import and export tool: impex.exe ............. 151
11 Adding vulnerability checks 153
11.1 Introduction ...................................................................... 153
11.2 GFI LanGuard VBscript language ............................................... 153
11.3 GFI LanGuard SSH Module ...................................................... 155
11.4 Python scripting .................................................................. 159
12 GFI LanGuard certifications 161
12.1 Introduction ...................................................................... 161
12.2 About OVAL ....................................................................... 161
12.3 About CVE ......................................................................... 162
13.1 Enabling NetBIOS on a network computer .................................... 165
14.1 Introduction ...................................................................... 167
14.2 Common Issues ................................................................... 167
14.3 The Troubleshooting wizard .................................................... 169
14.4 Knowledge Base .................................................................. 171
14.5 Web Forum ........................................................................ 171
14.6 Request technical support ...................................................... 171
14.7 Build notifications ............................................................... 172
16 Appendix - Data Processed by GFI LanGuard 177
16.1 Introduction ...................................................................... 177
16.2 System Patching Status ......................................................... 177
16.3 Ports ............................................................................... 177
16.4 Hardware .......................................................................... 178
16.5 Software........................................................................... 179
16.6 System Information .............................................................. 180
List of tables
Table 2 – Automated network audit properties
Table 5 – Target options when auditing
Table 6 – Logon and audit options
Table 8 – Custom target properties
Table 9 – New scheduled scan type
Table 10 – Remote logon credentials
Table 11 – Auto–remediation options
Table 13 – Response time icons
Table 14 – GFI LanGuard Vulnerability groups
Table 15 – System patching status
Table 16 – Hardware information from an audit
Table 17 –Software information from an audit
Table 18 – System information from an audit
Table 20 – View by computers information
Table 21 – Authentication methods
Table 22 – Updates download status
Table 23 – Security updates download
Table 24 – Automatic remediation actions
Table 25 – Automatic remediation stages
Table 28 – Advanced deployment options
Table 29 – Advanced deployment options
Table 31 – Remediation actions
Table 32 – Options available in Deploy Custom Software
Table 33 – Launch deployment options
Table 35 – Options to manage scanning profiles
Table 36 –Schedule scan properties
Table 37 – Manage applicable schedule scans
Table 38 – Mail settings parameters
Table 39 – Database retention options
Table 43 – Customize report parameters
Table 44 – Report placeholders
Table 45 – Complete/Combination scanning profiles
Table 46 – Vulnerability assessment scanning profiles
Table 47 – Network and Software audit scanning profiles
Table 48 – Vulnerability properties dialog
Table 49 – Applications Options
Table 51 – Insscmd command switches
Table 52 – Supported variables in inssmcd
Table 53 – deploycmd command switches
Table 54 – impex command switches
Table 55 – GFI LanGuard common issues
Table 56 – Information gathering options
List of screenshots
Screenshot 1 – GFI LanGuard script debugger
Screenshot 4 – Deploy agent wizard
Screenshot 5 – Agent properties
Screenshot 6 – Agent auto–remediation
Screenshot 7 – Launch manual scan
Screenshot 8 – Manual scan settings
Screenshot 9 – Scan result details
Screenshot 10 – Custom target properties
Screenshot 11 – New Scheduled Scan dialog
Screenshot 12 – Scheduled scan frequency
Screenshot 13 – Select scanning profile
Screenshot 14 – Remote logon credentials
Screenshot 15 – Scheduled scan auto–remediation options
Screenshot 16 – Scheduled scan reporting options
Screenshot 17 – Review scheduled scan job
Screenshot 18 – Scheduled scan status
Screenshot 20 – Vulnerability level meter
Screenshot 21 – Reloaded scan results
Screenshot 22 – Detailed view tab
Screenshot 23 – The Vulnerability Assessment node
Screenshot 24 – Missing Service pack: Bulletin info dialog
Screenshot 25 – The network and software audit node
Screenshot 26 – System patches status
Screenshot 27 –All UDP and TCP ports, found during a scan
Screenshot 28 – The audit policy administration wizard
Screenshot 29 – Results dialog in audit policy wizard
Screenshot 30 – View Dashboard
Screenshot 31 – Network Security Level
Screenshot 32 – Computer Vulnerability Distribution
Screenshot 33 – Most Vulnerable Computers
Screenshot 34 – Agent Status when selecting a domain/workgroup
Screenshot 35 – Audit status chart
Screenshot 36 – Vulnerability Trends Over Time for a domain/workgroup
Screenshot 37 – Vulnerability Trends Over Time for a single computer
Screenshot 38 – Computers by network role
Screenshot 39 – Computers by operating system
Screenshot 40 – Computer Details
Screenshot 42 – Remediation activity
Screenshot 43 – Top 5 issues to address
Screenshot 44 – Result statistics
Screenshot 45 – Analyze results by computer
Screenshot 46 – Dashboard: History
Screenshot 47 – Dashboard: Vulnerabilities
Screenshot 48 – Dashboard: Patches
Screenshot 49 – Dashboard: Ports
Screenshot 50 – Dashboard: Software
Screenshot 51 – Dashboard: Hardware
Screenshot 52 – Dashboard: System information
Screenshot 53 – Dashboard filtering criteria
Screenshot 54 – Computer\Domain list
Screenshot 55 – Configuring computer credentials
Screenshot 56 – Action Center: Scheduled Activity
Screenshot 57 – Security updates download
Screenshot 58 – Product updates activity
Screenshot 59 – Application inventory
Screenshot 60 – Mark application as unauthorized
Screenshot 61 – Before deployment options
Screenshot 62 – After deployment options
Screenshot 63 – Advanced deployment options
Screenshot 64 – Reboot/shut down options
Screenshot 65 – Warning messages
Screenshot 66 – Remediation center
Screenshot 67 – Select the updates to deploy
Screenshot 68 – Deploying missing patches on selected computers
Screenshot 69 – Deploy patches
Screenshot 70 – Uninstall security patches
Screenshot 71 – List of software to be deployed
Screenshot 72 – Target computers for software deployment
Screenshot 73 – Launch deployment options
Screenshot 74 – Uninstall applications
Screenshot 75 – Malware protection
Screenshot 76 – Remote desktop connection
Screenshot 77 – Remote desktop connection
Screenshot 78 – Remediation jobs
Screenshot 79 – Scheduled scans
Screenshot 80 – Scheduled scan toolbar
Screenshot 81 – Scheduled Scan properties
Screenshot 82 – Configuring Applications inventory
Screenshot 83 – Unauthorized application – scanning profile
Screenshot 84 – Applications inventory wizard
Screenshot 85 – Application auto–uninstall validation
Screenshot 86 – Manage applicable schedule scans
Screenshot 87 – Patch auto–deployment
Screenshot 88 – Patch Auto–Deployment Advanced Options
Screenshot 89– Configuring Patch Auto–download Properties
Screenshot 90 – Configuring Alerting Options
Screenshot 91 – The database maintenance properties dialog
Screenshot 92 – Microsoft SQL Server database backend options
Screenshot 93 – Database maintenance properties: Managed saved scan results tab
Screenshot 94 – Database maintenance properties: Scanned Computers tab
Screenshot 95 – Database Maintenance properties: Advanced tab
Screenshot 96 – Program updates
Screenshot 97 – Configuring proxy server settings
Screenshot 98 – Configure updates at application startup
Screenshot 99 – The Check for Updates wizard: Stage 1
Screenshot 100 – The Check for updates Wizar
Screenshot 101 – Import and Export Configuration
Screenshot 102 – Export configurations to file
Screenshot 103 – Import and Export Configurations
Screenshot 104 – Import configurations from a file
Screenshot 105 – Import and Export Configurations
Screenshot 106 – Import setting
Screenshot 107 – Reporting tab
Screenshot 108 – Report sample
Screenshot 109 – Scheduled reports settings
Screenshot 110 – Customize the report parameters
Screenshot 111 – Customize the report parameters
Screenshot 112 – Launch the scanning profiles editor
Screenshot 113 – The Scanning Profile Editor
Screenshot 114 – Scanning Profiles properties: Vulnerabilities tab options
Screenshot 115 – Select the vulnerability checks to be run by this scanning profile
Screenshot 116 – Vulnerability properties dialog: General tab
Screenshot 117 – Vulnerability conditions setup tab
Screenshot 118 – Check properties wizard
Screenshot 119 – Edit vulnerability
Screenshot 120 – Advanced vulnerability scanning dialogs
Screenshot 121 – Scanning Profiles properties: Patches tab options
Screenshot 122 – Select the missing patches to enumerate
Screenshot 123 – Searching for bulletin information
Screenshot 124 – Extended bulletin information
Screenshot 125 – Scanning Profiles properties: TCP Ports tab options
Screenshot 126 – Scanning Profiles properties: UDP Ports tab options
Screenshot 127 – Scanning Profiles properties: System Information tab options
Screenshot 128 – The network devices configuration page
Screenshot 129 – Advanced network devices configuration dialog
Screenshot 130 – The Devices configuration page: USB Devices tab options
Screenshot 131 – The applications configuration page
Screenshot 132 – The Applications tab: Installed Applications tab options
Screenshot 133 –The Applications configuration page: Advanced Options
Screenshot 134 – Security Applications Alert Configuration
Screenshot 135 – Scanning Profiles properties: Scanner Options tab
Screenshot 136 – The DNS Lookup tool
Screenshot 137 – The DNS Lookup tool
Screenshot 138 – Trace route tool
Screenshot 140 – Enumerate Computers tool
Screenshot 141 – The Enumerate Users tool dialog
Screenshot 142 – SNMP Audit tool
Screenshot 144 –SQL Server Audit
Screenshot 145 – The new vulnerability check dialog
Screenshot 146 – The check triggering conditions dialog
Screenshot 147 – The check triggering conditions dialog
Screenshot 148 – Independent checks: Python Script Test
Screenshot 149 – Searching for CVE information
Screenshot 150 – Local Areas Connection properties: WINS tab
Screenshot 151 – Troubleshooter wizard – Information details
Screenshot 152 – Troubleshooter wizard – Gathering information about known issues
Screenshot 153 – Troubleshooter fixed known issues
1 Introduction
1.1 Introduction to GFI LanGuard
GFI LanGuard is a security scanning, network auditing and remediation solution that enables you to scan and protect your network through:
»
Identification of system and network weaknesses via a comprehensive vulnerability check database. This includes tests, based on OVAL, CVE and SANS Top 20 vulnerability assessment guidelines.
»
Auditing of all hardware and software assets on your network, enabling you to create a detailed inventory of assets. This goes as far as enumerating installed applications as well as devices connected on your network.
»
Automatic download and remote installation of service packs and patches for Microsoft operating systems and third party products as well as automatic un–installation of unauthorized software.
1.2 About this manual
This manual is a comprehensive guide aimed at assisting you in configuring and using GFI
LanGuard. It builds on the instructions in the GFI LanGuard „Getting Start Guide‟ and describes the use and configuration required to achieve the best possible results. The GFI
LanGuard Getting Started Guide is available from: http://www.gfi.com/lannetscan/manual
This manual contains the following chapters:
C
HAPTER
Chapter 1
D
ESCRIPTION
Introduces this manual and GFI LanGuard.
Chapter 2
Provides information on how to deploy agents on your network.
Chapter 3
Chapter 4
Chapter 5
Chapter 6
Chapter 7
Provides information on how to perform a manual and a scheduled scan without using
GFI LanGuard agent. This chapter also includes information on how to view audit results.
Provides information on analyzing audit results using the status dashboard and the security sensors.
Provides information on how to fix vulnerabilities, using automatic remediation, remediation centre and remote support.
Provides information on how to customize and configure advanced settings in GFI
LanGuard.
Provides information on how to generate audit result reports and a description of the report contents.
GFI LanGuard Introduction
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1
C
HAPTER
Chapter 8
Chapter 9
Chapter 10
Chapter 11
Chapter 12
Chapter 13
Chapter 14
Glossary
D
ESCRIPTION
Provides information on the different scanning profiles in GFI LanGuard.
Describes each utility in GFI LanGuard and how these can be used on your network.
Using GFI LanGuard from the command line
Describes the command line tools available in GFI LanGuard and how these can be used.
Provides information on how to add vulnerability checks using VBscript and Python. Also includes information on GFI LanGuard SSH module.
Provides information on GFI LanGuard certifications, These include OVAL and CVE.
Provides information on how to enable NetBIOS on network computers
Provides information all the necessary information on how to deal with common problems encountered while using GFI LanGuard.
Defines technical terms used within GFI LanGuard.
Appendix Data processed by GFI LanGuard
Provides information on the data processed by GFI LanGuard including ports and protocols used.
1.2.1 Terms and conventions used in this manual
The following table contains a description of the common terms and conventions used in this manual:
T
ERM
D
ESCRIPTION
Additional information and references essential for the operation of GFI LanGuard.
Important notifications and cautions regarding potential issues that are commonly encountered.
►
Bold text
<Italic text>
Indented code
Step by step navigation instructions to access a function.
Indicate a control within the user interface, such as nodes, menus and buttons.
Replace text within angle brackets. Such as file paths and custom parameters.
The indented text indicates that the text is a programming code. In some programming languages indentation is important.
For any technical terms and their definitions as used in this manual, refer to the Glossary
chapter.
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Introduction GFI LanGuard
1.3 GFI LanGuard components
GFI LanGuard‟s architecture is designed for performance reliability and scalability, which caters for medium to large networks.
GFI LanGuard consists of the following components:
GFI LanGuard management console
The management console enables you to configure and use GFI LanGuard 2011. It also enables you to analyze audit results.
GFI LanGuard attendant service
GFI LanGuard attendant is the background service that manages all scheduled operations including scheduled network security scans, patch deployment and remediation operations.
GFI LanGuard agent deployment
GFI LanGuard provides you with the facility to use agents. These enable real time result analysis and reduce network bandwidth consumption. Depending on how you configure GFI
LanGuard, agents are deployed automatically on newly discovered machines or on manually selected computers. For more information on GFI LanGuard Agents, refer to
Managing Agents chapter in this manual.
GFI LanGuard patch agent service
GFI LanGuard patch agent is the background service that handles the deployment of patches, service packs and software updates on target computers.
GFI LanGuard Script Debugger
The GFI LanGuard Script Debugger is the module that allows you to write and debug custom scripts using a VBScript–compatible language.
Screenshot 1 – GFI LanGuard script debugger
Use this module to create scripts for custom vulnerability checks through which you can custom scan network targets for specific vulnerabilities.
GFI LanGuard script debugger is accessible from Start ► Programs ► GFI LanGuard 2011
► GFI LanGuard Script Debugger.
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1.4 Vulnerability management strategy
GFI recommends you to follow the sequence below for an effective vulnerability management strategy:
1. Configure Agents – For more information, refer to Managing Agents section in this
manual.
2. Analyze – For more information, refer to Analyzing results section in this manual.
3. Remediate - For more information, refer to Fixing vulnerabilities section in this manual.
Using agents is highly recommended because they provide real–time result analysis and reduce network bandwidth consumption. Agent–less audit is also available in GFI LanGuard. This enables you to perform audits manually or repeatedly on a schedule. For more information on Agent–less auditing, refer to
Agent–less auditing section in this manual.
Important notes
1. In most cases, vulnerability scans generate different event log entries across diverse systems. Example, UNIX logs and web server logs will all detect GFI LanGuard scans as intrusion attempts triggered from the computer running GFI LanGuard.
2. For large network environments, a Microsoft SQL Server/MSDE database backend is recommended instead of the Microsoft Access database. For more information on how to
configure the database backend, refer to Selecting a database backend section in this
manual.
3. When submitting a list of target computers from file, ensure that file contains only one target computer name per line.
If Intrusion Detection Software (IDS) is running during an audit, GFI LanGuard will set off a multitude of IDS warnings and intrusion alerts in these applications. If you are not responsible for the IDS system, make sure to inform the person in charge about any planned security audits.
To perform an audit, GFI LanGuard must remotely logon to target computers with administrator privileges.
Agent deployment can only be done on Microsoft Windows operating systems.
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Introduction GFI LanGuard
2 Managing Agents
2.1 Introduction
GFI LanGuard can be configured to deploy live agents automatically on newly discovered machines or on manually selected computers. Agents enable data processing and auditing to be done on target machines; once an audit is finished, the result is sent to GFI
LanGuard. Agents will:
»
Reduce scanning time
»
Minimize bandwidth consumption
»
Provide real time results
Agents can only be deployed on Microsoft Windows operating systems.
2.2 Deploying agents
To configure agent’s deployment:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011
Screenshot 2 –Home page
GFI LanGuard Managing Agents
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5
2. From the Home menu, select Manage Agents.
Screenshot 3 – Manage agents
3. Select Deploy Agents to select the target scan computers and click Next. There are two methods of selecting target computers, described below:
Table 1 –Target selection
O
PTION
Local Domain
D
ESCRIPTION
Deploy agents on all reachable computers within the same workgroup / domain where LanGuard is installed.
Custom
Deploy agents on specific computers or group of computers. Add new rules to search or specify target scan computers. For more information on how to add
4. (Optional) Select Authenticate using checkbox to specify alternate credentials.
5. (Optional) Click Advanced Settings to configure automated network audit properties.
Table 2 below describes these automated network properties:
Table 2 – Automated network audit properties
T
AB NAME
D
ESCRIPTION
General
Configure the schedule for when GFI LanGuard automatically scans for new machines in the network perimeter where agents are enabled.
Audit schedule
Configure how often the agent audits the host computer (where the agent is installed). Select the recurrence pattern and the time the audit will start.
Auto–remediation
Configure GFI LanGuard to automatically download and install missing patches and service packs. Uninstall unauthorized applications on the scanned computers.
For more information on how to configure auto–remediation, refer to
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Managing Agents GFI LanGuard
6. Click Next and Finish to complete agent deployment.
Alternate credentials must have administrative permissions on the scan targets.
It is recommended to enable System Restore on the target scan computers if
Auto–remediation is enabled in GFI LanGuard.
2.2.1 Custom agent deployment
The Custom option in the Deploy Agents wizard enables the creation of rules enabling you to search for specific computers. To launch the Add new rule dialog:
Screenshot 4 – Deploy agent wizard
1. Select Custom from the Deploy Agents wizard.
Table 3 below describes the available options:
Table 3 –Add new rule
O
PTION
Rule type
Add
Remove
D
ESCRIPTION
Enables you to specify the target computers to scan. Select:
»
Computer name is – manually enter a computer name or import the names from a saved text (.txt) file.
» Domain name is – select computers from one or more reachable domains.
»
Organization unit is – select computers from one or more reachable organization units.
Add specified computer name to list.
Remove selected computer from list.
GFI LanGuard Managing Agents
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O
PTION
Select…
Import…
D
ESCRIPTION
Select where to deploy agents from a list of reachable computers.
Specify location of a saved text (.txt) file with the list of computer names where to deploy agents.
Export
Export the defined list of computers and save it for future use.
Only include single computer names per line in the import file.
3. Click OK, once the rule is defined to save and continue with Deploy Agents wizard.
2.3 Configuring Agents
2.3.1 Agents settings
To configure additional agents’ settings:
1. From Configuration tab, select Agents Management.
2. Click Agents Settings.
3. (Optional) Table 4 below describes the available agent settings:
Table 4 –Agents settings
O
PTION
Auto uninstall
D
ESCRIPTION
Set the number of days after which GFI LanGuard Agents automatically uninstall themselves if the host computer is unresponsive for the set period of days.
Agents report using
Specify the communication ports used by GFI LanGuard and GFI LanGuard
Agents.
4. Click OK to save and close dialog.
Communication on TCP port 135 and 1070 must be enabled in Windows firewall for GFI LanGuard Agents to send data to GFI LanGuard.
2.3.2 Customizing agents
Agents can be modified through the Properties dialog.
To access agent properties:
1. Click Configuration tab ► Agents Management.
2. From the right pane, right–click an agent and select Properties.
3. (Optional) From General tab, specify the authentication method.
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Managing Agents GFI LanGuard
Screenshot 5 – Agent properties
4. From Agent Status tab, enable/disable agent deployment by clicking Deploy agent or
Disallow agent installation.
5. Click Change scan schedule… to configure agent scan schedule and from Scanning
profile, select the active scan profile.
6. Enable/disable agent auto–remediation. Click Change settings… to open Auto–
remediation settings dialog for that specific agent.
GFI LanGuard Managing Agents
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Screenshot 6 – Agent auto–remediation
7. Select Automatically download and deploy missing patches to enable automatic remediation for missing patches.
8. Select Automatically download and deploy missing service packs to enable automatic remediation for missing service packs.
9. Select Automatically uninstall unauthorized applications to enable automatic remediation for unauthorized applications.
10. (Optional) Click Configure auto–remediation options… to further customize remediation options.
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Managing Agents GFI LanGuard
3 Agent-less Auditing
3.1 Introduction
Agent–less auditing is the process of performing audits on target computers without using agents. Two types of audits can be done using this approach:
»
Manual audits – Perform audits on target computer(s) once.
»
Scheduled audits – Perform audits on a target computer(s) repeatedly on a schedule.
On completion of an agent–less audit, GFI LanGuard enables you to analyze the audit results. This section provides information on how to configure manual audits, scheduled audits and analyze the results. For more information on how to analyze results, refer to
and Audit Result Details sections in this manual.
3.2 Performing a manual audit
An effective audit can be done in three steps such as:
»
Configure scan properties – configure scan targets and any relative properties required to scan the networked computers.
»
Analyze scan results – identify the main network vulnerabilities discovered and the scan targets that require immediate attention.
»
Remediate vulnerabilities – implement patches, service packs or fixes to the scanned targets.
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3.2.1 Step 1: Configure target properties
1. Launch GFI LanGuard from Start ► Programs ► GFI LanGuard 2011 ► GFI LanGuard
2011.
Screenshot 7 – Launch manual scan
2. From the Home page, select Launch a scan.
Screenshot 8 – Manual scan settings
3. From the Scan Target drop–down menu, select the target computer or group of
computers to scan. Table 5 below describes the available options:
Table 5 – Target options when auditing
O
PTION
D
ESCRIPTION
Local host
Audit the local host where GFI LanGuard is installed.
Domain: primary domain
Audit the entire domain / workgroup of the computer / server where GFI
LanGuard is installed. For information on how to define custom target
manual.
File
Audit computers specified in a saved text (.txt) file. For information on how
to define custom target properties, refer to the
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Agent-less Auditing GFI LanGuard
4. From the Profile drop–down menu, select the scan profile that you want GFI LanGuard to action during the scan.
5. From the Credentials drop–down menu, select the log–on method used by GFI LanGuard
Table 6 below describes the available log–on methods:
Table 6 – Logon and audit options
O
PTION
Currently logged on user
Alternative credentials
A null session
D
ESCRIPTION
Use the current logged on user credentials when logging on scan targets.
Use custom credentials. Key–in the user name and password to use.
Log onto scan targets using a null session. The user will log onto the target machine as an anonymous user.
A private key file
Log onto UNIX machines using SSH. A user name and password is required.
6. (Optional) Select Use per computer credentials when available to logon target machines using the credentials specified in the Dashboard. For more information on how to
configure computer credentials using the dashboard, refer to Configure credentials section
in this manual.
7. (Optional) Select Remember credentials to use the configured credentials as default when performing an audit.
8. Click Scan to start auditing the selected targets.
For more information on Scanning Profiles, refer to the Scanning Profiles section
in this manual.
The credentials provided need to have administrator privileges in order for GFI
LanGuard to log–on to the target computers and carry out the network audit.
3.2.2 Step 2: Analyze scan results
One of the key steps in a network security audit is to analyze scan results and identify the most vulnerable areas that require immediate attention. The Scan Results Overview and
Scan Results Details sections provide this information.
To analyze scan results:
1. Launch GFI LanGuard from Start ► Programs ► GFI LanGuard 2011► GFI LanGuard
2011.
2. Launch a scan or load a scan from a saved file.
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Screenshot 9 – Scan result details
3. From the Scan tab, analyze the scan results from the provided views described below:
Table 7 – Scan Results
S
ECTION
Scan Results Overview
Scan Results Details
D
ESCRIPTION
Provides summarized information about the last scan. Information provided includes:
»
Scanned target names
»
The number and type of vulnerabilities detected during the scan.
This section enables users to select a scan target from the Scan Results
Overview section in order to display detailed information about every vulnerability detected on the selected computer.
For more information about scan results, refer to Audit Result Summary ,
and Analyzing Results sections in this manual.
To load saved scan results, go to File ► Load Scan Results from ►
Database/XML file.
3.2.3 Step 3: Remediate vulnerabilities
GFI LanGuard enables you to immediately remediate the detected vulnerabilities through
the Remediate tab. For more information on remediating vulnerabilities, refer to Fixing
Vulnerabilities section in this manual.
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3.2.4 Custom target properties
Target rules are custom rules used by GFI LanGuard to find a target computer or a domain.
Click Scan tab ► … (define button), to launch Custom target properties dialog.
Screenshot 10 – Custom target properties
To create a new target rule:
1. Click Add new rule... and configure search criteria. Table 8 below describes the
available rule types:
Table 8 – Custom target properties
R
ULE TYPE
D
ESCRIPTION
Computer name is
Search and add computers by name. Key–in a valid computer name and click
Add for each computer. Click OK to apply changes.
Computers file list is
Domain name is
Search and add computers from a text file. Click the browse button and locate the text file. Click OK to apply changes.
NOTE: When submitting a list of target computers from file, ensure that the file contains only one target computer name per line.
Search and add computers that are members of a domain. Select the domains from the list and click OK.
IP address is
Search and add computers by IP address. Select This computer to add the local host or Scan another computer to add a remote computer. Key–in the IP address if required and click OK.
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R
ULE TYPE
IP address range is
D
ESCRIPTION
Search and add computers within an IP range. Select Scan an IP address
range and key in the IP range or select CIDR subnet and key–in the range using CIDR notation.
NOTE: The Classless Inter–Domain Routing (CIDR) provides an alternative way of specifying an IP address range. The notation is as follows: <Base address> /
<IP network prefix>. Example: 192.168.0.0/16
Organization unit is
Search and add computers within an organizational unit. Click Select and from the list select the Organizational units. Click OK.
2. To identify the rule for future use key–in a valid name in Group name and click OK.
3.3 Scheduled scan
A scheduled scan is a network audit that is scheduled to run automatically on a specific date/time and at a specific frequency. Scheduled scans can be set to execute once or periodically. Scheduled scan status is monitored using the Activity Monitor tab ► Security
Scans.
Scheduled scans also enable:
»
Automatic download and deployment of missing updates detected during a scheduled audit.
»
Email notifications on network threats detection.
»
Consecutive scan comparison reports generation and email distribution.
»
Automatic uninstallation of unauthorized applications.
3.3.1 When to use scheduled Scans?
GFI recommends scheduled scans:
»
When GFI LanGuard Agent is not deployed on the target computer.
»
To automatically perform periodical/regular network vulnerability scans using same scanning profiles and parameters
»
To automatically trigger scans after office hours and generate alerts and auto– distribution of scan results via email.
»
To automatically trigger auto–remediation options, (Example: Auto download and deploy missing updates).
For more information on auto–remediation and deployment, options refer to
Automatic Remediation section in this chapter
Ensure that the GFI LanGuard Attendant service is running otherwise scheduled operations will fail to start. To view GFI LanGuard Attendant service, click Start
► Run, key–in services.msc and press Enter. Locate GFI LanGuard Attendant
Service and ensure that Status is Started.
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3.4 Setting up scheduled scans
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click Configuration tab ► Scheduled Scans.
3. From Common Tasks, select New scheduled scan…
Screenshot 11 – New Scheduled Scan dialog
4. Select one of the options described in Table 9 below and click Next:
Table 9 – New scheduled scan type
O
PTION
Scan a single computer
D
ESCRIPTION
Scan local host or one specific computer.
Scan a range of computers
Scan a number of computers defined through an IP range. For more information refer to: http://kbase.gfi.com/showarticle.asp?id=KBID002749
Scan a list of computers
Manually create a list of targets, import targets from file or select targets from network list.
Scan computers in text file
Scan targets enumerated in a specific text file.
Scan a domain or workgroup
Scan all targets connected to a domain/workgroup.
5. Depending on the option selected in the previous step, specify the respective target computer(s) details and click Next.
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Screenshot 12 – Scheduled scan frequency
6. Specify date/time/frequency of scheduled scan and click Next.
Screenshot 13 – Select scanning profile
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7. Specify the scanning profile and click Next.
Screenshot 14 – Remote logon credentials
8. (Optional) Specify Remote logon credentials and click Next. Remote logon credentials can be either one of the following:
Table 10 – Remote logon credentials
O
PTION
D
ESCRIPTION
GFI LanGuard 10
Attendant Service account
Performs the scan using the credentials specified while installing GFI
LanGuard 2011.
Alternative credentials
SSH Private Key
Use per computer credentials when available
Specify alternate credentials to connect to the scan computers.
NOTE: Ensure the supplied credentials have administrative privileges.
Key in a username and select the key file used to logon to UNIX/LINUX based systems.
Use predefined credentials for the scan being configured. For more
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Screenshot 15 – Scheduled scan auto–remediation options
Table 11 – Auto–remediation options
O
PTION
Automatically download and deploy missing patches
Automatically download and deploy missing service packs
Automatically uninstall unauthorized applications
Configure auto–remediation
View applications which this scan will uninstall
D
ESCRIPTION
Automatically download and deploy missing patches on target machines.
Automatically download and deploy missing service packs on target machines.
If this option is selected all applications validated as unauthorized, will be uninstalled from the scanned computer
(unauthorized applications are defined in Application
Inventory). For more details see
Automatically remove unauthorized applications from target machines. Unauthorized applications are defined in the
Application Inventory). For more details see
Click the link to launch the Applications which will be
uninstalled dialog. This will list all the applications that will be uninstalled when the scheduled scan is finished.
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Screenshot 16 – Scheduled scan reporting options
10. (Optional) Configure Reporting options as described below:
Table 12 – Reporting options
O
PTION
Email the scan report
Save the scan report to disk
Comparison data and auto remediation details
Full scan results data
Configure alerting options
D
ESCRIPTION
Send a report by email at the end of each scheduled scan.
Save a report to disk at the end of each scheduled scan.
Include details of auto remediation actions performed and result comparison with previous security scans.
NOTE: Comparison is done between scans with same scan target(s) and scanning profile.
Include full scan result details.
(Optional) Click Configure alerting options… to specify sender/recipient details.
For information on configuring alerting options, refer to
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Screenshot 17 – Review scheduled scan job
13. Click OK and Finish.
By default, all new scheduled scans are disabled. To enable, select Configuration tab ►
Scheduled Scans and click on the button.
Confirm that the new scheduled scans are successfully set by clicking on Activity Monitor tab ► Security Scans. New scheduled scans are listed in the queue.
Screenshot 18 – Scheduled scan status
For more information on Scheduled Scans refer to the Scheduled Scans section in
this manual.
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3.5 Audit result summary
On completion of a network security scan, it is important to identify the areas that require immediate attention. The correct analysis and interpretation of information collected enables you to achieve this goal.
To view the progress and results of an audit:
1. Wait for a scan to complete or load a result from the database/file. For more
2. Click Scan.
Screenshot 19 – Scan summary
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3.5.1 Vulnerability level rating
The vulnerability level is a rating given by GFI LanGuard to each computer after it is scanned. The rating indicates the vulnerability level of a computer/network, depending on the number and type of vulnerabilities and/or missing patches found.
Screenshot 20 – Vulnerability level meter
High vulnerability ratings are the result of identified vulnerabilities and /or missing patches that are classified as high risk.
When a number of computers are scanned in a single audit session, a measurement of the global vulnerability level is based on a weighted sum of the vulnerabilities detected on the computers scanned.
The Vulnerability level is indicated using color–coded graphical bar. A red colour–code indicates a high vulnerability level, while a green colour–code indicates a low vulnerability level.
3.5.2 Loading saved scan results from database
By default, saved scan results are stored in a database. GFI LanGuard stores the results data of the last 10 scans performed per scanning profile. You can configure the number of
To load saved scan results from the database backend or from XML files:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click the GFI LanGuard button ► File ► Load Scan Results from ► Database…
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Screenshot 21 – Reloaded scan results
3. Select the saved scan result and click OK.
The right pointing arrow indicates that the scan did not complete successfully.
3.5.3 Save and load scan result in XML format
Scan results are an invaluable source of information for systems administrators. GFI
LanGuard results are stored in a Microsoft–SQL Server or a Microsoft–Access database. In addition, scan results can also be exported to XML.
To save scan results to XML file:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click on Scan.
3. Launch a new scan or load a scan from the database.
4. Click the GFI LanGuard button ► File ► Save Scan Results.
5. Locate the destination where you want to save the XML and click Save.
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To load saved scan results from an XML file:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click the GFI LanGuard button ► File ► Load Scan Results from ► XML File…
3. Locate the scan results to load and click OK.
3.6 Audit result details
On scan completion, the Results section displays a graphical representation of the vulnerability level including the scan result in more detail. To access the Results section:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Wait for a scan to complete or load a result from the database/file.
3. Click Scan.
Screenshot 22 – Detailed view tab
Scan Results
Overview
Displays information related to the scanned computer or domain.
Scan Results Details
Displays information related to the scan performed on target computer including vulnerabilities found, system patching status, etc.
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From Scan Results Overview, expand a computer node to access results retrieved during the scan. Security scan results are organized in two sub–nodes tagged as:
»
Vulnerability Assessment
»
Network & Software Audit
While a scan is in progress, each computer node has an icon that categorizes the response
time. Table 13 below describes the different icons used by GFI LanGuard to categorize the
response time. The first icon indicates that the scan is queued, while the second icon indicates that the scan is in progress.
Table 13 – Response time icons
C
ATEGORY
I
NFORMATION
Fast response
Medium response
Slow response
R
ESPONSE TIME IN MILLISECONDS
Less than 25ms
Between 25ms and 100ms
More than 100ms
3.6.1 Vulnerability assessment
Screenshot 23 – The Vulnerability Assessment node
Click on any Vulnerability Assessment node to view the security vulnerabilities identified on the target computer grouped by type and severity as follows:
»
High Security Vulnerabilities
»
Low Security Vulnerabilities
»
Potential vulnerabilities
»
Missing Service Packs
»
Missing Patches
High/Med/Low Security vulnerabilities
Click on the High Security Vulnerabilities or Low Security Vulnerabilities sub–nodes
for a list of weaknesses discovered while auditing a target device. Table 14 below
describes these groups:
Table 14 – GFI LanGuard Vulnerability groups
G
ROUP
D
ESCRIPTION
Mail, FTP, RPC, DNS and Miscellaneous
Shows vulnerabilities discovered on FTP servers, DNS servers, and
SMTP/POP3/IMAP mail servers. Links to Microsoft Knowledge Base articles or other support documentation are provided.
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G
ROUP
Web
Services
Registry
Software
Rootkit
D
ESCRIPTION
Lists discovered vulnerabilities on web servers (such as wrong configuration issues). Supported web servers include Apache, Netscape, and Microsoft I.I.S.
Lists vulnerabilities discovered in active services as well as the list of unused accounts that are still active and accessible on scanned targets.
Registry settings of a scanned network device are listed. Links to support documentation and short vulnerability descriptions are provided.
Enumerates software installed on the scanned network device(s). Links to supporting documentation and short vulnerability descriptions are provided.
Enumerates discovered vulnerabilities because of having a rootkit installed on the scanned network device(s). Links to supporting documentation and short vulnerability descriptions are provided.
Potential vulnerabilities
Select Potential vulnerabilities sub–node to view scan result items classified as possible network weaknesses. Although not classified as vulnerabilities, these scan result entries still require particular attention since malicious users can exploit them during malicious activity.
For example, during vulnerability scanning GFI LanGuard enumerates all modems installed and configured on target computers. If unused, modems are of no threat to your network.
If connected to a telephone line these modems can however be used to gain unauthorized and unmonitored access to the Internet. Users can potentially bypass corporate perimeter security including firewalls, anti–virus, website rating and web content blocking. This exposes the corporate IT infrastructure to a wide range of threats including hacker attacks.
GFI LanGuard considers installed modems as possible threats and enumerates them in the
Potential Vulnerabilities sub–node.
Missing Service Packs/Patches
Click Missing Service Packs or Missing Patches sub–node to check any missing software updates or patches.
GFI LanGuard can identify missing service packs and patches on various products.
For a complete list of supported products visit: http://kbase.gfi.com/showarticle.asp?id=KBID002573
Bulletin information
To access bulletin information, right–click on the respective service pack and select More
details ► Bulletin Info.
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Screenshot 24 – Missing Service pack: Bulletin info dialog
3.6.2 Network & Software Audit
Screenshot 25 – The network and software audit node
Click Network & Software Audit to view security vulnerabilities identified on scanned targets. Here, vulnerabilities are grouped by type and severity as follows:
»
System Patching Status
»
Ports
»
Hardware
»
Software
»
System Information
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System Patching Status
Click System Patching Status to view all missing and installed patches on a target machine.
Table 15 – System patching status
I
CON
D
ESCRIPTION
Missing Patches
Missing software patches.
Installed Service
Packs
Installed service packs.
Installed Patches
Installed software patches
Screenshot 26 – System patches status
Ports
Click Ports to view all open TCP and UDP ports detected during a scan. If a commonly exploited port is discovered to be open, GFI LanGuard marks it in red.
Some software products may use the same ports as known Trojans. For additional security, GFI LanGuard identifies these ports as a threat.
Apart from detecting open ports, GFI LanGuard uses service fingerprint technology to analyze the service(s) that are running behind the detected open port(s). With service fingerprint, GFI LanGuard can detect if malicious software is using the detected open port.
Screenshot 27 –All UDP and TCP ports, found during a scan
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Hardware
Click Hardware to view all details discovered by the hardware audit. The hardware audit, amongst others, displays information such as MAC addresses, IP addresses, device type;
device vendor etc. Table 16 below describes the hardware information groups:
Table 16 – Hardware information from an audit
I
CON
D
ESCRIPTION
Network Devices, including information of all physical, virtual and software–enumerated devices.
Local Drives, including information on local drives such as available disk space and file system type.
Processors, including information regarding the processor of a target machine, such as vendor name and processor speed.
Motherboard, including information regarding the motherboard of a target machine, such as product name, manufacturer, version and serial number.
Memory details, including information regarding the memory allocation of a target machine, such as free physical/virtual memory available.
Storage details, including information regarding the storage of a target machine, such as floppy disk drive, CD/ROM and hard drives.
Display adapters, including information regarding the display and video devices of a target machine, such as the device manufacturer.
Other devices, including information of devices that does not fall under the mentioned categories above, such as keyboard, ports, mouse and human interface devices.
Software
Click Software to view all details involved in the software audit. The software audit amongst others displays information such as:
»
application name
»
publisher
»
version
Table 17 below describes the hardware information groups:
Table 17 –Software information from an audit
I
CON
D
ESCRIPTION
General Applications – Enumerates installed software on scan targets..
Antivirus Applications – Lists installed antivirus engines on scan targets.
Instant Messenger Applications – Lists all detected instances of Instant messenger applications on scan targets.
Patch Management Applications – Specifies information of installed patches on scan targets.
Web Browser Applications – Contains scanned targets that have Internet browsers installed.
Firewall Applications – Enumerates information on installed Firewall applications on scan targets.
Anti–phishing Applications – Lists information of installed anti–phishing engines on scan targets.
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I
CON
D
ESCRIPTION
VPN Client Applications – Includes information on installed Virtual Private Network clients on scan targets.
Peer–To–Peer Applications – Shows installed Peer–To–Peer applications on scan targets.
System Information
Click System Information to view all details related to the operating system installed on a
target machine. Table 18 below describes the system information groups:
Table 18 – System information from an audit
C
ATEGORY
I
NFORMATION
P
ROVIDED
Shares
»
Share name
»
Share remark (extra details on the share).
» Folder which is being shared on the target computer
»
Share permissions and access rights
» NTFS permissions and access rights.
Password Policy
Security Audit
Policy
Computer
»
Minimum password length
»
Maximum password length
»
Minimum password expiry date
»
Force logoff
» Password history.
»
Audit account logon events
» Audit account management
»
Audit directory service access
»
Audit logon events
»
And more…
Registry
»
Registered owner
»
Registered organization
»
Product name
»
Current build number.
NETBIOS Names
»
Workstation service
»
Domain name
»
Domain controllers
»
File server service.
»
MAC address
»
Time to live (TTL)
»
Network role
»
Domain.
H
ELPS TO IDENTIFY
»
Users sharing entire hard–drives, shares that have weak or incorrectly configured access permissions
»
Startup folders, and similar system files, that are accessible by unauthorized users, or through user accounts, that do not have administrator privileges, but are allowed to execute code on target computers.
»
Unnecessary or unused shares.
»
Incorrectly configured lockout control
»
Password strength enforcement policies.
»
Security holes or breaches.
»
Hardware and software settings such as which drivers and applications will be automatically launched at system startup.
»
Rogue computers
»
Wrong configurations.
»
Rogue computers
»
Wrong configurations.
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C
ATEGORY
Groups
Users
Logged On Users
I
NFORMATION
P
ROVIDED
» Account operators
»
Administrators
» Backup operations
»
Guest.
»
Full name
» Privilege
»
Flags
» Login.
»
List of logged on users.
H
ELPS TO IDENTIFY
» Wrong configurations
»
Security flaws due to rogue or obsolete user groups.
»
Rogue, obsolete or default user accounts.
Sessions
Processes
Remote TOD
(time of day)
»
Lists hosts remotely connected to the target computer during scanning.
»
List of active services.
»
Authorized and unauthorized users currently logged on computers.
»
Authorized and unauthorized remote connections.
Services
» List of active processes.
»
Time of remote workstation, server or laptop.
»
Rogue or malicious processes; redundant services.
» Rogue or malicious processes.
»
Time inconsistencies and regional settings
»
Wrong configurations.
Security audit policy
An important part of any security plan is the ability to monitor and audit events on your network. These event logs are frequently referenced to identify security holes or breaches.
Identifying attempts and preventing them from becoming successful breaches of your system security is critical. In Windows, you can use „Group Policies‟ to set up an audit policy that can track user activities or system events in specific logs.
To keep track of your system auditing policy, GFI LanGuard collects the security audit policy settings from target computers and includes them in the scan result. To access more information on the result click on Security Audit Policy sub–node.
Apart from gaining knowledge on the current audit policy settings, you can also use GFI
LanGuard to access and modify the audit policy settings of your target computers. To achieve this:
1. From the Scan Results Overview panel, right–click on the respective target computer and select Enable auditing on ► This computer/Selected computers/All computers.
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Screenshot 28 – The audit policy administration wizard
2. Select/unselect auditing policies accordingly, and click Next to deploy the audit policy configuration settings, on the target computer(s).
Screenshot 29 – Results dialog in audit policy wizard
3. At this stage, a dialog will show whether the deployment of audit policy settings was successful or not. To proceed to the next stage click Next. Click Back to re–deploy settings on failed computers.
4. Click Finish to finalize configuration.
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Groups/users
Rogue, outdated or default user accounts can be exploited by malicious or unauthorized users to gain access to restricted areas of your IT infrastructure. The „Guest‟ account for example is just one commonly exploited accounts; more often than not, this account is left configured within a system and even worse without changing the default password settings. Malicious users have developed applications that can automatically re–enable the
„Guest‟ account and grant it administrative rights. This empowers users to gain access to sensitive areas of the corporate IT infrastructure.
GFI LanGuard collects information on all user accounts and user groups currently enabled on scanned targets. This information is organized in the scan results under two separated nodes. To access the list of user accounts identified during on a target computer, click
Users sub–node. Use the information enumerated in this sub–node to inspect the access privileges assigned to each user account. To gain access to the list of user–groups configured on a target computer, click Groups sub–node.
Users should not use local accounts to log on to a network computer. For better security, users should log on to network computers using a „Domain‟ or an „Active
Directory‟ account.
Sessions
Click Sessions sub–node to access the list of hosts that were remotely connected to the target computer during scanning.
The information included in this sub–node also includes the remote connection details of the scanning sessions just performed by GFI LanGuard. For example, the IP of the computer running LanGuard, logon credentials and other related information.
Services
Active services can be a potential security weak spot in your network system. Any of these services can be a Trojan, a virus or another type of malware, that can seriously affect your system in a dangerous way. Furthermore, unnecessary applications and services that are left running on a system consume valuable system resources.
During the scanning process, GFI LanGuard enumerates all services running on a target computer for you to analyze. This way you can identify the services to stop. Further to the freeing up of resources, this exercise automatically hardens your network by reducing the entry points through which an attacker can penetrate into your system. To access the list of services enumerated during a scan, click Services sub–node.
Processes
Click Processes sub–node to access the list of processes running on the target computer during a scan.
Remote time of day
Click Remote TOD (time of the day) sub–node to view the network time that was read from the target computer during the scan. This time is generally set on network computers by the respective domain controller.
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4 Analyzing Results
4.1 Introduction
The Dashboard section provides you with extensive security information based on data acquired during audits. Amongst others, the Dashboard section enables you to determine the current network vulnerability level, the top–most vulnerable computers, and the number of computers in the database. To display the Dashboard section:
1. Launch GFI LanGuard management console and from the Home page select View
Dashboard.
Screenshot 30 – View Dashboard
2. From the Dashboard tab, select one of the options described in the following sections:
4.1.1 Overview
The Dashboard Overview is a graphical representation of the security level/vulnerability level of a single computer, domain or entire network.
When a computer or domain is selected, the results related to the selected computer/domain are automatically updated in the dashboard. Below is a description of each section found in the dashboard:
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Network security level
Screenshot 31 – Network Security Level
This rating indicates the vulnerability level of a computer/network, depending on the number and type of vulnerabilities and/or missing patches found. A high vulnerability level is a result of vulnerabilities and/or missing patches which average severity is categorized as high.
Computer vulnerability distribution
Screenshot 32 – Computer Vulnerability Distribution
This chart is available only when selecting a domain or a workgroup, and displays the distribution of vulnerabilities on your network. This chart enables you to determine how many computers have high, medium and low vulnerability rating.
Most vulnerable computers
Screenshot 33 – Most Vulnerable Computers
This list is available only when selecting a domain or a workgroup, and shows the most vulnerable computers discovered during the scan. The icon color on the left indicates the vulnerability level.
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Agent status
When selecting a domain or workgroup, a chart showing the overall agent status of all computers within the domain/workgroup is displayed. This enables you to determine the number of agents installed or pending installation on the selected domain/workgroup.
Screenshot 34 – Agent Status when selecting a domain/workgroup
When selecting a single computer, this section displays an icon representing the agent
status. The icons are described in Table 19 below:
Table 19 – Agent status
I
CON
S
TATUS NAME
Not installed
D
ESCRIPTION
Agent is not installed on the target machine.
Pending installation
Installation is pending. A status can be pending when the machine is offline or the agent is being installed.
Pending uninstall Uninstallation is pending. A status can be pending when the machine is offline or the agent is being uninstalled.
Installed Agent is installed on the target machine.
Audit status
This chart is available only when selecting a domain or workgroup and enables you to identify how many audits have been performed on your network grouped by time.
Screenshot 35 – Audit status chart
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Vulnerability trends over time
When a domain or workgroup is selected, this section displays a line graph showing the change of vulnerability level over time grouped by computer count.
Screenshot 36 – Vulnerability Trends Over Time for a domain/workgroup
When a single computer is selected, this section displays a graph showing the change of vulnerability level over time for the selected computer.
Screenshot 37 – Vulnerability Trends Over Time for a single computer
Computers by network role
This chart is available only when selecting a domain or a workgroup and displays the number of audited computers, grouped by network role. Amongst other roles, this graph identifies the number of servers and workstations per selected domain.
Screenshot 38 – Computers by network role
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Computers by operating system
This chart is available only when selecting a domain or a workgroup and displays the number of audited computers, grouped by the installed operating system.
Screenshot 39 – Computers by operating system
Computer details
This section is available when selecting a single computer and enables you to view the selected computer details.
Screenshot 40 – Computer Details
Scan activity
This line graph is available only when selecting a single computer and enables you to view the number of scans/audits performed on the selected computer. In addition enables you to verify if scheduled scans are being performed.
Screenshot 41 – Scan activity
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Remediation Activity
This line graph is available only when selecting a single computer and enables you to view the number of remediation activities performed on the selected computer. In addition, this graph enables you to verify that auto–remediation is performed.
Screenshot 42 – Remediation activity
Top 5 Issues to Address
This section is available only when selecting a single computer, and displays the top five issues to address for the selected computer.
Screenshot 43 – Top 5 issues to address
Results statistics
This section is available only when selecting a single computer and displays an overview of the audit result. Amongst others, the result enables you to identify the number of missing patches, number of installed applications, open ports and running services.
Screenshot 44 – Result statistics
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4.2 Computers view
Screenshot 45 – Analyze results by computer
Select this view to group audit results by computer. From the drop down list, select one of
the options described in Table 20 below to view related information:
Table 20 – View by computers information
O
PTION
D
ESCRIPTION
General information
Select this option to display information on the:
»
Domain name
»
Operating system
»
Service pack installed
»
Last scan date and time
»
Operating system language
NOTE: Server and VM columns enable you to identify if the selected computer is a server or a virtual machine respectively.
Agent Details
Select this option to view the agent status. This option enables you to identify if an agent is installed on a computer and if yes, displays the type of credentials being used by the agent.
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O
PTION
Vulnerabilities
Patching status
Open ports
Software
Hardware
System information
D
ESCRIPTION
View the number of vulnerabilities found on a computer grouped by severity.
Severity of a vulnerability can be:
»
High
» Medium
»
Low
» Potential
For a full description of each rating, refer to
section in this manual.
View the number of:
»
Missing patches
»
Missing service packs
»
Installed patches
»
Installed service packs
View the number of:
»
Open TCP ports
» Open UDP ports
»
Backdoors
View the number of:
» Antiphishing engines
»
Antispyware engines
» Antivirus engines
»
Backup applications
»
Data loss prevention applications
»
Device access and desk encryption applications
»
Firewalls
»
Installed applications
»
Instant messengers
»
Peer to peer applications
»
Unauthorized applications
»
Virtual machines
»
VPN clients
»
Web browsers
View information on:
»
Number of disk drives
»
Free disk space
»
Memory size
»
Number of processors
»
Other hardware.
View information on:
»
The number of shared folders
»
Number of groups
»
Number of users
»
Logged users
» Audit policy status.
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4.3 History view
Select this view to group audit results by date for a specific computer. To configure the history starting date or history period click the link provided.
Screenshot 46 – Dashboard: History
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4.4 Vulnerabilities view
Display more details on the vulnerabilities found on a network and the number of affected computers. When a vulnerability is selected from the Vulnerability List, the Details section provides more information on the selected vulnerability. From the Details, section click View affected computers or View unaffected computers to display a list of affected and unaffected computers. For a description of terms used in this result, refer to
Screenshot 47 – Dashboard: Vulnerabilities
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4.5 Patches view
Display more details on the missing/installed patches and service packs found during a network audit. When a patch/service pack is selected from the List, the Details section provides more information on the selected patch/service pack. From the Details section, click View computers having this patch missing to display a list of computers having the
selected patch missing. For a description of terms used in this result, refer to System
Patching Status section in this manual.
Screenshot 48 – Dashboard: Patches
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4.6 Ports view
Display more details on the open ports found during a network audit. When a port is selected from the Port List, the Details section provides more information on the selected port. From the Details section, click View computers having this port open to display a list of computers having the selected port open. For a description of terms used in this
result, refer to Ports section in this manual.
Screenshot 49 – Dashboard: Ports
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4.7 Software view
Display more details on the installed applications found during a network audit. When an application is selected from the Application List, the Details section provides more information on the selected application. For a description of terms used in this result,
refer to Software section in this manual.
Screenshot 50 – Dashboard: Software
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4.8 Hardware view
Display more information on the hardware found during a network audit. Select hardware from the List to display more details. For a description of terms used in this result, refer to
Hardware section in this manual.
Screenshot 51 – Dashboard: Hardware
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4.9 System Information
The System Information tab, displays information associated with the operating system of
a scan target(s). For a description of terms used in this result, refer to System Information
section in this manual.
Screenshot 52 – Dashboard: System information
4.10 Display results
GFI LanGuard includes a filtering option that allows you to quickly find a computer or domain and immediately display the results. To display the result for a particular domain or computer:
1. Click Dashboard tab.
2. From the left panel select the filtering criteria. Select between the pre–defined criteria or click Advanced filtering to add additional criteria.
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Screenshot 53 – Dashboard filtering criteria
3. From the left panel select the computer\domain. The dashboard automatically updates the results on selection.
Screenshot 54 – Computer\Domain list
4.11 Configure credentials
Regardless of the network size, systems administrators typically have to use different sets of credentials for different computers. Systems (such as Linux–based environments) often use of special authentication methods such as public key authentication. Such methods generally also require special/custom logon credentials, (for example, private key files) instead of the conventional password strings.
The GFI LanGuard Dashboard enables you can configure a different set of logon credentials for each computer to scan. The scanning engine will use the specified credentials to authenticate on target computers.
1. From GFI LanGuard home page, select View Dashboard.
2. From the left panel, right–click a computer or domain and select Properties.
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Screenshot 55 – Configuring computer credentials
3. From the Credentials section, select Authenticate using checkbox to configure the
authentication method. Table 21 below describes the available authentication methods:
Table 21 – Authentication methods
O
PTION
Currently logged on user
Alternative credentials
A null session
A private key file
D
ESCRIPTION
Uses the currently logged on user credentials when logging on target machines.
Uses custom credentials. Key–in the user name and password to use.
Logs in target machines using a null session. User will log into the target machine as an anonymous user.
Uses SSH private key authentication (Linux–based systems). A username and a key file are required.
4. Click OK.
4.12 Monitoring activity
Scheduled Activity is all the GFI LanGuard operations that have been set up to trigger at a later date and time. To view current activity:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click Activity Monitor tab.
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Screenshot 56 – Action Center: Scheduled Activity
3. From the left pane, select one of the following views:
»
Security Scans
»
Security Updates Downloads
»
Remediation Operations
»
Product Updates Activity
This section describes each option in more details.
Security Scans
The Security Scans section enables monitoring of all the security scans that are currently in progress. To stop a scan right–click the security scan and select Stop selected scans option.
Security Updates Downloads
The Security Updates Downloads screen enables you to monitor, pause, cancel or change priority to all the scheduled patch downloads.
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Screenshot 57 – Security updates download
The icon in the first column indicates the download status. Table 22 below describes the
different status:
Table 22 – Updates download status
I
CON
D
ESCRIPTION
Downloaded – Update downloaded successfully.
Downloading – Update is being downloaded.
Failed – An error occurred while downloading the update.
Pending – Update is queued for download.
Cancelled – User canceled update download.
Right–click an entry and select one of the options described in Table 23 below:
Table 23 – Security updates download
O
PTION
Configure Patch Auto–Download
Edit proxy settings…
Change download priority…
Cancel selected downloads
Pause all downloads
D
ESCRIPTION
Enables or disables auto–patch download and used to configure where the patches are stored. For more information, refer to
Configure the proxy settings used by GFI LanGuard to connect to
the Internet. For more information, refer to
Change the download priority. Select between, High, normal or low priority.
Stop and remove the selected download.
Temporarily pause all downloads.
Remediation Operations
The remediation operations screen enables you to monitor as well as cancel all the scheduled remediation features within GFI LanGuard. For more information on how to fix
vulnerabilities, refer to Fixing vulnerabilities section in this manual.
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Product Updates Activity
The Product updates activity screen enables you to monitor or edit GFI LanGuard scheduled or manual updates. For more information on how to set up scheduled or manual
updates, refer to Program updates section in this manual.
Screenshot 58 – Product updates activity
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5 Fixing Vulnerabilities
5.1 Introduction
GFI LanGuard enables you to automatically fix some of the issues identified during your network audit using the built–in tools that ship with the product. Available actions include:
Table 24 – Automatic remediation actions
O
PTION
Auto–patch management
Applications auto–uninstall
D
ESCRIPTION
Downloads missing updates and deploys them over the network.
Auto–uninstall of applications that support silent uninstall. The process involves a test phase (called validation) during which an application is uninstalled automatically to identify if silent uninstall is supported by target application. If it is, all the other instances on the network are automatically uninstalled during a scan.
5.2 Automatic-Remediation
Automatic-Remediation enables you to automatically download and deploy missing patches as well as uninstall unauthorized applications during scheduled operations.
To uninstall software, a 3–stage process is required in order to identify whether the selected application supports silent uninstall:
Table 25 – Automatic remediation stages
S
TAGE
D
ESCRIPTION
Stage 1
Select the application to auto–uninstall.
Stage 2
Stage 3
Ensure that application supports silent uninstall. Test this by trying to remotely uninstall the application. This is the validation process.
Setup a scheduled audit that will remove the unauthorized application. This is done automatically (using agents) or manually (agent–less approach).
Auto–remediation and un–installation of un–authorized applications only work with scanning profiles that detect missing patches and/or Installed applications.
Always test patches in a test environment before deployment.
By default, Microsoft updates are not enabled for automatic deployment. Manually approve each patch (as it is tested) or set all
Microsoft updates as approved.
5.2.1 Automatically deploy missing updates
To deploy missing patches automatically, follow the instructions below before configuring a scan with auto–remediation options.
Approve the patches to deploy automatically
1. From the Configuration tab, navigate to Security Updates ► Patch Auto–Deployment.
2. Select the patches to approve for auto–deployment. Optionally, set the automatic patch approval options by selecting To automatically approve patches and/or service packs,
click here option. For more information, refer to the Auto–deployment settings section in
this manual.
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5.2.2 Automatically uninstall unauthorized applications
To uninstall unauthorized applications automatically follow the instructions below before setting up a scan with auto–remediation options.
To define unauthorized applications list:
1. From the Configuration tab, select Applications inventory sub–node.
Screenshot 59 – Application inventory
2. From the right panel locate the application to configure as unauthorized and under
Unauthorized on, click Click to configure… link.
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Screenshot 60 – Mark application as unauthorized
3. Select the scanning profile that will classify the application as High Security
Vulnerability and click Next.
4. Review the currently affected applications screen and click Finish to finalize settings.
Refer to the Applications inventory section in this manual for more information on defining
unauthorized applications.
Validate applications to uninstall remotely:
1. From the Configuration tab, select Applications inventory ► Auto–Uninstall Validation sub–node.
2. In the right pane, select an application to validate and click Validate…
3. In the Application auto–uninstall validation wizard click Next and select the computer where to test the application auto–uninstall. Click Next.
4. Provide the authentication details for the validation operation and click Next.
5. Review the Auto–uninstall validation wizard information and click Start to validate application auto–uninstall.
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5.2.3 Auto-remediation options
To edit the general deployment options, after a scan:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click Remediate tab ► Remediation Center. Select a remediation action from the right panel and click Options.
Screenshot 61 – Before deployment options
3. Configure Before Deployment options described below:
Table 26 – Before deployment
O
PTION
Warn user before deployment
(show message)
Wait for user’s approval
Messages
Administrative shares
Custom shares
D
ESCRIPTION
Displays a message on the target machine to warn the user before deploying software.
Waits for user approval before deploying software.
Click Messages… to select the end-user‟s computer language and define
the warning message. For more information, refer to
Define auto remediation messages
Make a copy of the software on the default network shares.
Make a copy of the software in a custom share. Key–in the folder name in the text box.
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O
PTION
Remember settings
D
ESCRIPTION
Saves your configured settings and uses them during the next remediation job.
Screenshot 62 – After deployment options
4. Click After Deployment tab. Configure After Deployment options described below:
Table 27 – After deployment
O
PTION
Do not reboot/shutdown the computer
D
ESCRIPTION
Select this option to leave scan target(s) turned on after remediating vulnerabilities.
Reboot the target computers
Shut down the target computers
Reboots the computers after remediating vulnerabilities.
Target machine will shut down after deploying software.
Immediately after deployment
Reboots/shuts down computers immediately after remediating vulnerabilities.
At the next occurrence of
When between
Specify the time when the computers reboot/shut down.
This option enables you to specify two time values. If the remediation job is completed between the specified times, the computer(s) will reboot/shut down immediately. Otherwise, the reboot/shut down operation is postponed until the next entrance into the specified time interval.
Let the user decide
Click Preview… to view a screenshot of the dialog in the user manual.
This dialog opens on the end-user‟s computer after remediating
vulnerabilities. For more information, refer to
End-user reboot and shut down options
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O
PTION
Show notification before shut down for
Delete copied files from remote computers after deployment
Remember settings
D
ESCRIPTION
Shows a custom message on the end user‟s computer for a specified number of minutes before reboot/shut down.
Deletes the downloaded patches / service packs after they are deployed.
Saves your configured settings and uses them during the next remediation job.
Screenshot 63 – Advanced deployment options
4. (Optional) Select Advanced tab. Configure the options described below:
Table 28 – Advanced deployment options
O
PTION
Number of deployment threads
Deploy patches under the following administrative account.
D
ESCRIPTION
Key–in the number of threads to use when deploying software. The number of threads determines the number of simultaneous deployment.
Select this option to use a custom administrative account to log and deploy patches on target machines. Key–in a valid username and password. The account selected must have Log–on as service
privilege on the target computers. For more information on how to configure an account with log–on as service privilege, refer to: http://technet.microsoft.com/en– us/library/cc739424(WS.10).aspx
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O
PTION
Deploy patches with their original names
6. Click OK to apply changes.
D
ESCRIPTION
Deploy patches on target machines using the original patches name. If this option is not selected GFI LanGuard will give a unique name for each patch.
5.2.4 End-user reboot and shut down options
When configuring After Deployment settings, in Auto-remediation options, you can configure GFI LanGuard to notify and let the user decide when to reboot or shut down the computer after completing an administrative task. The below dialog opens on the user‟s computer and enables him/her to select one of the following options:
Screenshot 64 – Reboot/shut down options
The table below describes the available options:
Table 29 – Advanced deployment options
O
PTION
Restart now
Remind me in
Restart on
Don’t bother me again
D
ESCRIPTION
Reboots/shuts down the computer immediately after completing an administrative task.
Specify a time interval (in minutes), when to remind the end-user.
Specify the date and time when the machine reboots/shuts down.
The user is not prompted again.
5.2.5 Define auto-remediation messages
GFI LanGuard allows you to specify warning messages for auto remediation operations. You can customize predefined messages and set the language according to the target computer‟s language.
To specify warning messages:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click Remediate tab ► Remediation Center. Select a remediation action from the right panel and click Options.
3. From Before Deployment tab, select Warn user before deployment (show a message).
4. Click Messages…
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Screenshot 65 – Warning messages
5. Specify the options described below:
Table 30 – Warning messages
O
PTION
Language
When not waiting for user approval
When waiting for user approval
D
ESCRIPTION
Select the language the message language.
Use or customize the pre defined message that launches on the enduser‟s computer when GFI LanGuard is not waiting for approval.
Use or customize the pre defined message that launches on the enduser‟s computer when GFI LanGuard is waiting for approval.
5.2.6 Agent auto-remediation
In an agent–based environment, automatic remediation options can be set per every deployed agent. This enables you to configure every agent with specific auto–remediation options to suit your requirements.
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5.3 Remediation center
Apart from automatically downloading patches and service packs, GFI LanGuard can also deploy these updates network–wide as well as recall any patches that were deployed.
While an infrequent occurrence, patches may be recalled due to newly discovered vulnerabilities or problems caused by the installation of these updates such as conflict issues with present software or hardware. Examples of updates recalled by the manufacturer include patches MS03–045 and MS03–047 for
Exchange that were released by Microsoft on October 15, 2006.
Both patch deployment and patch rollback operations are managed by an agent service that manages all file transfers between GFI LanGuard and remote targets. This service is installed automatically on the remote target computer during the patch deployment process.
The Remediation Center enables you to fix security issues found during a network scan by deploying or uninstalling applications from target machines. To access the Remediation
Center, select Remediate tab ► Remediation Center.
To deploy missing patches on scan targets, ensure that GFI LanGuard is running under an account that has administrative privileges.
Important notes
1. Ensure that the NetBIOS service is enabled on the remote target computer. For more
2. A complete list of Microsoft products for which GFI LanGuard can download and deploy patches is available at http://kbase.gfi.com/showarticle.asp?id=KBID001820 .
3. Non–Microsoft software update patches supported by GFI LanGuard is available at http://www.gfi.com/lannetscan/3pfullreport.htm
.
4. GFI LanGuard can be set to automatically download missing patches and service packs
discovered during a network security scan. For more information, refer to the Configuring
Microsoft updates section in this manual.
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Screenshot 66 – Remediation center
5. From the left panel, expand and locate a computer or a domain to perform remediation actions. The available remediation actions are described below:
Table 31 – Remediation actions
A
CTION
Deploy Security Patches
Deploy Service Packs
Uninstall Software Patches
Uninstall Service Packs
Deploy Custom Software
Uninstall Applications
Malware Protection
D
ESCRIPTION
Deploy missing patches discovered when auditing target computers. For
more information on how to deploy patches, refer to
Deploy security patches and service packs
Deploy missing service packs found when auditing target computers. For
more information on how to deploy, service packs refer to
Deploy security patches and service packs
Uninstall software patches from target computers. For more information
on how to uninstall, software patches refer to
Uninstall software patches and service packs
Uninstall service packs from target computers. For more information on
how to uninstall, service packs refer to
Uninstall software patches and service packs
Deploy custom applications and scripts on target computers. For more
information on how to deploy custom software, refer to
Uninstall applications from target computers. For more information on how to manually uninstall applications from target computers, refer to
Perform Malware protection actions on target computers. For more information on how to perform Malware protection actions, refer to
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A
CTION
Remote Support via Remote
Desktop Connection
D
ESCRIPTION
Connect to a target machine and perform administrative tasks using remote desktop connection. For more information on how to connect
remotely to a target machine, refer to
in this manual.
You can use GFI LanGuard filtering option to locate a machine. For more
information, refer to Display results section in this manual
5.4 Deploy security patches and service packs
To deploy missing security patches and service packs on specific computers:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Select Remediate tab ► Remediation Center.
3. From the left panel, select the computer or domain where you want to perform the remediation action.
4. From the right panel, click on Deploy Security Patches or Deploy Service Packs.
Screenshot 67 – Select the updates to deploy
5. From the list of missing patches/service packs, select the updates to deploy. Right–click on the list to access Check/Uncheck all options.
Screenshot 68 – Deploying missing patches on selected computers
6. From the list of target computers, select the target computers where to deploy patches/service packs. Right–click on list to access Check/Uncheck all options.
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Screenshot 69 – Deploy patches
7. Select the preferred launch deployment option.
»
Choose Deploy on to schedule patch/service pack deployment to a later date/time.
Specify date and time.
»
Choose Deploy immediately to start the deployment immediately. Click Remediate
Now.
8. Configure the authentication credentials to use; select between:
»
Currently logged user
»
Alternative credentials
»
A null session
9. Follow any on–screen instructions (if applicable).
5.4.1 Patch deployment warning message
Deploying patches triggers a warning message on targets computer to inform users about the installation process.
Depending on the patch deployment configuration, one of two messages is shown. These messages are fully customizable, enabling you to display any information suitable to your
requirements. For information, refer to Auto–remediation options section in this manual.
5.5 Uninstall software patches and service packs
To roll back deployed patches and service packs:
1. Select Remediate tab ► Remediation Center.
2. From the left panel, select the computer or domain where you want to perform the remediation action.
3. From the right panel select Uninstall Security Patches or Uninstall Service Packs.
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Screenshot 70 – Uninstall security patches
4. Select the patches or service packs to uninstall from selected targets.
5. (Optional) Select Deploy on, configure the date, and time when you want to uninstall the selected application/patch.
6. Configure the authentication credentials to use, select between:
»
Currently logged user
»
Alternative credentials
»
A null session
7. Click Remediate Now to start the uninstall process.
5.6 Deploy custom software
Apart from security updates and patches, GFI LanGuard also enables you to remotely deploy third party or custom software network–wide. Software that can be remotely deployed includes:
»
Security applications such as anti–virus/anti–spyware solutions and software firewalls
»
Third party software updates and patches such as anti–virus/anti–spyware signature file updates
»
Custom code such as scripts and batch–files
»
Desktop applications such as Microsoft Office 2007 and more.
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To specify which software to deploy:
1. Click on Remediate tab ► Remediation Center.
2. Click Deploy Custom Software.
Screenshot 71 – List of software to be deployed
3. Use the options described in Table 32 below to add the applications to deploy:
Table 32 – Options available in Deploy Custom Software
O
PTION
D
ESCRIPTION
Add
Click this button to launch the Add custom software dialog. This dialog enables you to add an application to the list and if required configure parameters.
Edit
Remove
Import
Export
Select an application and click this button to launch the Add custom software dialog. This dialog enables you to modify the existing installation parameters.
Select an application from the list and click this button to remove the application.
Click this button to import the applications parameters from an XML file.
Click this button to export the applications parameters to XML file.
Screenshot 72 – Target computers for software deployment
4. Select the target computers where to deploy software. Right-click on a target computer to select between Check all / Uncheck all options.
Screenshot 73 – Launch deployment options
6. Configure the authentication credentials to use. Select between:
»
Currently logged user
»
Alternative credentials
»
A null session
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7. Select the preferred launch deployment option. Table 33 below describes the available
options:
Table 33 – Launch deployment options
O
PTION
D
ESCRIPTION
Deploy on
Schedule patch / service pack deployment to a later date / time.
Remediate now
Start deployment immediately.
8. To view the deployment progress, click Remediation Jobs from the right panel. For
more information, refer to Remediation Jobs section in this manual.
5.7 Uninstall custom applications
Using this feature, you can control the installed applications, on which computers, and uninstall any unauthorized applications present on network computers.
To uninstall applications:
1. Select Remediate tab ► Remediation Center and click Uninstall Applications.
Screenshot 74 – Uninstall applications
2. Select the applications to uninstall and the computers to uninstall from.
The list of applications displayed relies on the unauthorized applications set up for the scanning profile in use. For more information on how to set up and
validate applications to uninstall refer to the Applications inventory and
Application auto–uninstall validation sections in this manual.
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3. Configure the authentication credentials to use. Select from:
»
Currently logged user
»
Alternative credentials
»
A null session
4. Select the preferred uninstall option described in Table 34 below:
Table 34 – Uninstall options
O
PTION
Uninstall on
Uninstall immediately
D
ESCRIPTION
Schedule patch / service pack uninstallation to a later date / time.
Uninstall the selected applications immediately.
5. Click Uninstall Now to uninstall applications based on your configuration.
6. To view the un–installation progress, click Remediation Jobs from the right panel. For
more information on Remediation Jobs, refer to Remediation Jobs section in this manual.
5.8 Malware protection actions
Use the Malware Protection section to remediate vulnerabilities related to malware protection identified on target computers. Amongst others, this section enables you to scan target machines for spyware, viruses and enable local firewall.
To scan a machine for viruses and spyware, the target machine must have anti– virus and anti–spyware installed.
Screenshot 75 – Malware protection
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To remediate malware protection vulnerabilities:
1. Select Remediate tab ► Remediation Center and click Malware Protection.
2. Select the action/computer combination.
3. Configure the authentication credentials to use, select from:
»
Currently logged user
»
Alternative credentials
»
A null session
4. Select Deploy immediately to immediately uninstall any applications selected or provide a date/time combination in the Deploy on field.
5. Click Remediate Now to uninstall applications based on your configuration.
6. To view the action progress, click Remediation Jobs from the right panel. For more
information on Remediation Jobs, refer to Remediation Jobs section in this manual.
5.9 Using remote support
Through Remote Support, you can control remote computers using Terminal Services and
Remote Desktop Protocol. Remote Support enables you to install missing patches, service packs and custom software through a remote connection.
Screenshot 76 – Remote desktop connection
To connect remotely to a target machine:
1. Click Remediate tab and from the left panel select a computer or domain/workgroup.
2. Expand Remote Support via Remote Desktop Connection from the right panel.
3. Depending on your selection, the list contains the available computers that allow remote desktop connection.
4. Double click a machine from the list to connect.
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Screenshot 77 – Remote desktop connection
To disconnect a machine, select Remediation Center ► Remote Support via…, right–click a machine from the list and select Disconnect.
5.10 Remediation Jobs
The Remediation Jobs section enables you to monitor the remediation actions in progress.
To open the Remediation Jobs, click Remediate tab ► Remediation Jobs.
Select a computer from the left panel to view the progress for that computer.
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Screenshot 78 – Remediation jobs
To stop a deployment action, right–click a remediation job entry and select
Cancel selected deployment.
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6 Configuring GFI LanGuard
6.1 Introduction
GFI LanGuard enables you to run vulnerability scans straight out of the box – using the default settings configured prior to shipping. If required you can also customize these settings to suit any particular vulnerability management requirements that your organization might need. You can customize and configure various aspects of GFI LanGuard including scan schedules, vulnerability checks, scan filters and scan profiles.
6.2 Scheduled Scans
Scheduled scans enable you to automate the process of performing regular scans, auditing and remediation procedures.
Screenshot 79 – Scheduled scans
6.2.1 Reviewing, editing or deleting scan schedules
Scan schedules can be reviewed, edited, or deleted from Configuration tab ► Scheduled
Scans node.
Screenshot 80 – Scheduled scan toolbar
All scans are listed in the review page together with the relevant information. Use the
scheduled scan toolbar to perform the actions described in Table 35 below:
Table 35 – Options to manage scanning profiles
C
OMPLETE
/C
OMBINATION
S
CANS
S
CANNING
P
ROFILES
Add new scan– Display the New scheduled scan wizard and create a new scheduled scan.
Delete – Use this button to delete the selected scheduled scan.
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C
OMPLETE
/C
OMBINATION
S
CANS
S
CANNING
P
ROFILES
Properties – Review and edit the properties of the selected scan.
Enable/Disable – Toggle the status of the selected scan between enabled and disabled. This enables you to activate/suspend a scanning schedule without deleting the scheduled scan.
Scan now – Trigger the selected scheduled scan. This button overrides the scheduled scan date/time settings and executes an immediate scan.
6.2.2 Scheduled scan properties
The scheduled scan properties page enables you to configure all the parameters of the scheduled scans.
To use the scheduled scan properties tab:
1. Go to Configuration tab ► Scheduled Scans.
2. Select the scheduled scan and click the Scheduled Scan Properties .
Screenshot 81 – Scheduled Scan properties
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3. Modify the options described below:
Table 36 –Schedule scan properties
T
AB NAME
General
Logon Credentials
D
ESCRIPTION
Make changes to scan target setting, type of scanning profile and scan frequency.
Use this tab to specify logon credentials used when scanning the specified target.
Auto–remediation
Use this tab to configure the remediation options applicable to the scan being configured. This includes downloading and installing missing patches and service packs and unauthorized software un–installation.
Configure reporting options used for the selected scheduled scan.
Reporting
Advanced
Use this tab to specify whether GFI LanGuard should wait for offline computers to connect to the network. This enables GFI LanGuard to postpone the scan on these machines and keep track of targets pending a scan. For example, laptops or other mobile devices, that are not connected to the network. As soon as these are connected, scanning will start.
4. Click OK to finalize your configuration.
6.3 Applications inventory
GFI LanGuard applications inventory provides a list of all applications detected during past scans. The list is used to specify unauthorized applications. You can also manually add applications to the list. You can do this by specifying the entire name as well as a partial name, specify generic names or part of an application name. GFI LanGuard automatically scans the list of applications and detects partial names.
Screenshot 82 – Configuring Applications inventory
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To indicate an application as unauthorized:
1. Click on Configuration tab ► Applications inventory sub–node.
2. From the list of applications detected on the right, double click the application to set as unauthorized.
Screenshot 83 – Unauthorized application – scanning profile
3. Select the scanning profile for which this application will be set as unauthorized and click Next.
4. GFI LanGuard can associate partial names with entries already in the list. As a result, the system will prompt you to confirm whether to apply the same changes also to applications partially have the same name.
5. Click Finish to finalize settings.
6.3.1 Adding a new unauthorized application
To add a new application manually without using the inventory:
1. Click Configuration tab ► Applications inventory sub–node.
2. From Common Tasks, click Add a new application…
3. In the welcome screen, click Next.
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Screenshot 84 – Applications inventory wizard
4. Specify application name. Optionally provide the version number and publisher name.
Click Next.
5. Select the scanning profiles that will detect unauthorized applications (Example: Full
Scan) and click Next.
6. Specify whether changes made will effect applications, which have partial/full name match. Click Next to continue.
7. Review Add application wizard information and click Finish to finalize configuration.
6.3.2 Application auto-uninstall
Application auto–uninstall entails that applications marked as unauthorized for specific scanning profiles are first validated for a successful uninstall on a test machine.
Subsequently a scheduled scan based on the scanning profile for which the application is marked as unauthorized, is configured to auto–uninstall applications.
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Application auto–uninstall validation
Screenshot 85 – Application auto–uninstall validation
Application auto–uninstall validation enables you to validate the uninstallation procedure for the applications which are to be automatically uninstalled by GFI LanGuard. This is a requirement prior to the actual uninstallation process and no applications are un–installed during scans unless verified.
For more information on how to mark applications as unauthorized and therefore
enable their uninstallation, refer to Applications inventory section in this
manual.
1. Click Configuration tab ► Applications Inventory ► Auto–Uninstall Validation
2. From the right pane, select an application to validate and click Validate…
3. In the Application auto–uninstall validation wizard, click Next.
4. Select the computer where to test the application auto–uninstall and click Next.
5. Provide the authentication details for the validation operation and click Next.
6. Review the Auto–uninstall validation wizard information and click Start.
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Managing scheduled scans
The Manage applicable scheduled scans button enables you to review or edit scheduled scans, which will perform the validated applications auto install. To manage a scheduled scan:
1. From the Auto–Uninstall validation pane, click Manage applicable scheduled scans….
Screenshot 86 – Manage applicable schedule scans
2. From, Manage applicable schedule scans dialog, click one of the options described in
Table 37 – Manage applicable schedule scans
O
PTION
D
ESCRIPTION
Edit selected scan…
Modify the selected schedule scan. For more information on how to
edit an existing scheduled scan, refer to
in this manual.
Create a new scheduled scan…
View all scheduled scans…
Add a new scheduled scan using the new scheduled scan wizard. For more information on how to set up a new scheduled scan, refer to
Manage scheduled scans. For more information on how to edit an
existing scheduled scan, refer to
manual.
6.4 Configuring security updates
6.4.1 Patch Auto-deployment settings
GFI LanGuard ships with a patch auto–deployment feature, that enables you to automatically deploy missing patches and service packs in all 38 languages supported by
Microsoft products. GFI LanGuard also supports patching of third party (Non–Microsoft) patches. For a complete list of supported third party applications visit: http://www.gfi.com/lannetscan/3pfullreport.htm
.
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To configure patch auto–deployment:
1. Click on the Configuration tab ► Security updates ► Patch Auto–Deployment.
2. In the right pane, select the patches to auto–deploy.
Screenshot 87 – Patch auto–deployment
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Advanced Options
To configure auto–remediation:
1. Click Configuration tab ► Security Updates ► Patch Auto–Deployment and from
Common Tasks, click Advanced options.
Screenshot 88 – Patch Auto–Deployment Advanced Options
2. Select the appropriate check boxes and click OK to save changes.
Manage applicable scheduled scans
The Manage applicable scheduled scan… option enables you to configure scheduled scans that trigger auto–deployment of patches and service packs. For more information on how
to use the Manage applicable scheduled scan feature refer to Managing scheduled scans
section in this manual.
6.4.2 Patch Auto download settings
GFI LanGuard ships with a patch auto–download feature, that enables the automatic download of missing patches and service packs in all 38 languages supported by Microsoft products. In addition, you can also schedule patch auto–download by specifying the timeframe within which the download of patches is performed.
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To configure patch auto–download:
1. Click Configuration tab ► Security updates ► Patch Auto–Download.
2. From the right pane, click the link.
Screenshot 89– Configuring Patch Auto–download Properties
3. In the General tab, select between All patches or Only needed patches.
Selecting All patches, downloads all patches issued by Microsoft, regardless of whether these are required for deployment. The Only needs patches option downloads only patches required for deployment.
4. To change the location where the downloaded patches are stored click the Patch
Repository tab and specify the required details.
5. To change the timeframe during which patch downloads are performed, click on the
Timeframe tab and specify the required details.
GFI LanGuard can use patch files downloaded by Microsoft WSUS when deploying missing patches and service packs on target computers. To use Microsoft WSUS downloaded files, select Use files downloaded by Microsoft WSUS when
available and specify the Microsoft WSUS downloaded patches location.
6. Click OK to finalize settings.
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6.5 Configuring alerting options
To configure alerting options:
1. Click Configuration tab ► Alerting options.
2. Click the link in the right pane.
Screenshot 90 – Configuring Alerting Options
3. Key–in the parameters described in Table 38 below:
Table 38 – Mail settings parameters
O
PTION
D
ESCRIPTION
To
The recipient email address. Emails send by GFI LanGuard are received by this email address.
CC
From
Server
Key–in another email address in this field if you need to send a copy to another email address.
The sender email address. GFI LanGuard will use this email account to send the required emails.
Defines the server through which emails are routed. This can be either an FQDN
(Fully Qualified Domain Name) or an IP Address.
Port
SMTP Server requires login
Defines the IP port through which emails are routed. Default value is 25
Select this option if the SMTP server requires a username and password to authenticate.
4. Click on the Verify Settings button to verify email settings.
5. Click OK to finalize settings.
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6.6 Database maintenance options
GFI LanGuard ships with a set of database maintenance options through which you can maintain your scan results database backend in good shape.
For example, you can improve product performance and prevent your scan results database backend from getting excessively large by automatically deleting scan results that are older than a specific number of months.
If you are using a Microsoft Access database backend, you can also schedule database compaction. Compaction enables you to repair any corrupted data and to delete database records marked for deletion in your database backend; ensuring the integrity of your scan results database.
6.6.1 Selecting a database backend
GFI LanGuard supports both Microsoft Access and Microsoft SQL Server (2000 or higher) based database backend.
Storing scan results in a MS Access database backend
To store scan results in a Microsoft Access database:
1. Click Configuration tab ► Database Maintenance Options ► Database backend
settings…
Screenshot 91 – The database maintenance properties dialog
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2. Select the MS Access option and specify the full path (including the file name) of your
Microsoft Access database backend.
The specified database file is created if it does not exist.
If the specified database file already exists and belongs to a previous version of
GFI LanGuard, you are asked to over–write the existing information.
3. Click OK to finalize settings.
Storing scan results in an MS SQL Server database
To store scan results in a Microsoft SQL Server database:
1. Click Configuration tab ► Database Maintenance Options ► Database backend
settings…
Screenshot 92 – Microsoft SQL Server database backend options
2. Select the MS SQL Server option and choose the SQL Server that will be hosting the database from the provided list of servers discovered on your network.
3. Specify the SQL Server credentials or select the Use NT authority credentials option to authenticate to the SQL server using windows account details.
4. Click OK to finalize your settings.
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If the specified server and credentials are correct, GFI LanGuard will automatically log on to your SQL Server and create the necessary database tables. If the database tables already exist, it will re–use them.
When using NT authority credentials, make sure that GFI LanGuard services are running under an account that has both access and administrative privileges on the SQL Server databases.
6.6.2 Managing saved scan results
Use the Saved Scan Results tab to maintain your database backend and delete saved scan results that are no longer required. Deletion of non–required saved scan results can be achieved manually as well as automatically through scheduled database maintenance.
During scheduled database maintenance, GFI LanGuard automatically deletes saved scan results that are older than a specific number of days/weeks or months. You can also configure automated database maintenance to retain only a specific number of recent scan results for every scan target and scan profile.
Screenshot 93 – Database maintenance properties: Managed saved scan results tab
To manage saved scan results:
1. Click on the Configuration tab ► Database Maintenance Options ► Manage saved
scan results…
2. To delete saved scan results, select the particular result(s) and click Delete Scan(s).
3. To let GFI LanGuard manage database maintenance for you, select Scans generated
during the last to delete scan results, which are older than a specific number of
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days/weeks, or months or Scans per scan target per profile in number of to retain only a specific number of recent scan results.
6.6.3 Database maintenance: List of scanned computers
GFI LanGuard maintains a global list of scanned computers for licensing purposes. Any computers in excess of what is specified in the licensing information are not scanned.
GFI LanGuard enables systems administrators to delete scanned computers in order to release licenses that were previously utilized.
Screenshot 94 – Database maintenance properties: Scanned Computers tab
To delete computers previously scanned:
1. Click Configuration tab ► Database Maintenance Options ► Manage list of scanned
computers…
2. Select the computers to delete and click Delete selected computer(s).
Deleting computers from the database is a one–way operation that will also delete all computer related data from the database. Once deleted, this data is no longer available.
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6.6.4 Database maintenance: Advanced options
GFI LanGuard enables you to repair and compact the Microsoft Access database backend automatically to improve performance.
During compaction, the database files are reorganized and records that have been marked for deletion are removed. In this way, you can regain used storage space. During this process, GFI LanGuard also repairs corrupted database backend files. Corruption may occur for various reasons. In most cases, a Microsoft Access database is corrupted when the database is unexpectedly closed before records are saved (for example, due to a power failure, unresponsive operations forced reboots, and so on).
Screenshot 95 – Database Maintenance properties: Advanced tab
To compact and repair a Microsoft Access database backend:
1. Click Configuration tab ► Database Maintenance Options ► Database maintenance
plan…
2. To manually launch a repair and compact process on a Microsoft Access database backend, click Compact Now.
3. To automate the repair and compact process on an Microsoft Access database backend select One time only to schedule a onetime Microsoft Access database repair and compact or Every to execute a repair and compact process on a regular schedule. Specify the date, time and frequency in days/weeks or months at which the compact and repair operations will be executed on your database backend.
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6.6.5 Database maintenance: Retention options
Database retention options enable you to keep your database clean and consistent, by configuring GFI LanGuard to automatically delete unwanted scan results and scan history information while retaining important ones.
To configure retention settings:
1. Click Configuration tab ► Database Maintenance Options ► Database backend
settings… ► Retention tab.
2. Configure the options described in Table 39 below:
Table 39 – Database retention options
O
PTION
Keep scans generated during the last
D
ESCRIPTION
Keep scan results generated during the specified number of days/weeks/months.
Keep scans per scan target per profile number of
Never delete history
Specify the number of scan results to keep, for every scan target by every scan profile.
Select this option if you want to keep all scan history.
Keep history for the last
3. Click OK to finalize settings.
Keep scan history for the specified number of days/weeks/months.
6.7 Program updates
Screenshot 96 – Program updates
This tool enables GFI LanGuard to detect the latest vulnerabilities and maintain its scanning performance. Configure GFI LanGuard to auto–download updates released by GFI to improve functionalities in GFI LanGuard. These updates also include checking GFI web site for newer builds. Updates can be enabled/disabled by selecting the checkbox in the
Auto–download column.
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GFI LanGuard can download all Unicode languages. This includes (but is not limited to)
English, German, French, Italian, Spanish, Arabic, Danish, Czech, Finnish, Hebrew,
Hungarian, Japanese, Korean, Dutch, Norwegian, Polish, Portuguese, Portuguese/Brazilian,
Russian, Swedish, Chinese, Chinese (Taiwan), Greek, and Turkish.
6.7.1 Configure GFI LanGuard Proxy settings
To manually configure proxy server settings for internet updates:
1. Click on Configuration tab ► Program Updates.
2. From Common Tasks select Edit proxy settings…
Screenshot 97 – Configuring proxy server settings
3. Select Override automatic proxy detection; configure the options described below:
Table 40 – Proxy settings
O
PTION
Connect directly to the Internet
Connect via a proxy server
Proxy server requires authentication
D
ESCRIPTION
A direct internet connection is available.
Internet access is through a proxy server.
Update the Server name and port number using this format
<server>:<port>
(Optional) Enter username and password if required by the proxy server.
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6.7.2 Configure GFI LanGuard auto-updates options
GFI LanGuard can check for the availability of software updates at every program startup.
To disable/enable this feature
1. Click on Configuration tab ► Program Updates. From Common Tasks select Edit
program updates options…
Screenshot 98 – Configure updates at application startup
2. Select/unselect Check for updates at application startup to enable/disable auto update checks at application startup.
3. Select/unselect enable scheduled updates to configure the frequency of update checks.
4. Specify whether GFI LanGuard download updates from GFI website or from an alternative location.
5. Click OK to finalize settings.
6.7.3 Starting program updates manually
To start GFI LanGuard program updates manually:
1. Click on Configuration tab ► Program Updates.
2. From Common Tasks click Check for updates.
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Screenshot 99 – The Check for Updates wizard: Stage 1
2. Specify the location from where the required update files will be downloaded.
3. (Optional) Change the default download path, select Download all update files… to this
path to provide an alternate download path to store all GFI LanGuard updates.
4. Click Next to proceed with the update.
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Screenshot 100 – The Check for updates Wizar
5. Select the updates and click Next.
6. Click Start to start the update process.
6.7.4 Product Updates Activity
GFI LanGuard maintains a comprehensive log of all updates activity. This information can be reviewed by clicking Activity Monitor tab ► Product Updates Activity node. This enables you to keep track of which updates are successfully or not.
6.8 Importing and Exporting Settings
GFI LanGuard allows configurations, import and export, through Import and Export
Configurations… in the File menu. Configurations that can be Imported/Exported include:
»
Scanning Profiles
»
Vulnerability Assessment
»
Ports (TCP/UDP)
»
Results Filtering Reports
»
Auto–Remediate Settings (Auto–Uninstall and Patch settings)
»
Options (Database Backend, Alerting, Schedule scan and Internal Settings)
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6.8.1 Exporting Configurations from file
To export the configurations:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click the GFI LanGuard button ► File ► Import and Export Configurations…
Screenshot 101 – Import and Export Configuration
3. Select Export the desired configuration to a file and click Next.
4. Specify the path were to save the exported configuration, and click Next.
Screenshot 102 – Export configurations to file
5. Wait for the configuration tree to load and select the configurations to export. Click
Next to start export.
6. A notify dialog will confirm that exporting is completed.
7. Click OK to finish.
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6.8.2 Importing Configurations from file
To import saved configurations:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
Screenshot 103 – Import and Export Configurations
2. Click the GFI LanGuard button ► File ► Import and Export Configurations…
3. Select Import the desired configuration from a file and click Next.
4. Specify the path from where to load configuration, and click Next.
5. Wait for the configuration tree to load and select the configurations to import. Click
Next to start import.
Screenshot 104 – Import configurations from a file
6. Confirm the override dialog box; by clicking, Yes or No as required.
7. A notify dialog will confirm that exporting is completed
8. Click OK to finish.
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6.8.3 Import settings from another instance of GFI LanGuard
1. Launch the latest GFI LanGuard management console from Start ► Programs ► GFI
LanGuard 2011 ► GFI LanGuard 2011.
2. Click the GFI LanGuard button ► File ► Import and Export Configurations… to launch the Import and Export Configurations wizard.
Screenshot 105 – Import and Export Configurations
3. Select Import the configuration from another instance and click Next.
4. Click Browse to select the GFI LanGuard installation folder. The default location is
<Local Disk>\Program Files\GFI\ LanGuard <Version>. Click Next.
Screenshot 106 – Import setting
5. Select which settings you want to import and click Next.
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6. While importing, GFI LanGuard will ask you whether you want to override or keep your
settings. Select an option from Table 41 below:
Table 41 – Override options
O
PTION
Yes
No
D
ESCRIPTION
Override the current setting with the imported setting.
Keep the current setting and ignore the imported setting.
Auto Rename
Rename the imported settings and keep the current settings.
7. Click OK when the import is ready.
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7 Reporting
7.1 Introduction
The Reporting tab enables you to generate technical IT level and management non–IT level reports based on network security audits carried out by GFI LanGuard. This chapter describes how to manage the reports in GFI LanGuard.
Screenshot 107 – Reporting tab
7.2 Available reports
Table 42 below describes the available reports in GFI LanGuard:
Table 42 – Available reports
R
EPORT
N
AME
Network Security
Overview
D
ESCRIPTION
An executive summary report showing:
»
Network vulnerability level
»
Most vulnerable computers
»
Agent status
»
Audit status
»
Vulnerability trends over time
»
Information on operating systems
»
Servers and workstations.
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R
EPORT
N
AME
Computer Security
Overview
Vulnerability Status
Missing Security
Updates
Full Audit
Computer Summary
Computers Detailed
Hardware Audit
Open Shares
Open Ports
Scan Based – Full Audit
Last Scan Summary
Last Scan Details
Last Auto–remediation
Last Scan Security
Changes
Software Audit
D
ESCRIPTION
An executive summary report showing:
»
Computer vulnerability level
»
Agent status
»
Audit status
»
Vulnerability trends over time
»
Computer summary and details.
Shows statistical information related to the vulnerabilities detected on target computers. Vulnerabilities can be grouped by:
» Computer name
»
Vulnerability severity
» Timestamp
»
Category.
Lists statistical information related to missing security updates, found on scanned computers.
A technical report showing information retrieved during an audit. Amongst others, the report contains information on:
»
Vulnerabilities
» Open ports
»
Hardware and software.
A summary of scan target information, including:
»
Operating system information
»
Agent status
»
Vulnerabilities severity.
Amongst other computer related details, this report includes information on:
»
The network role of a scan target
»
The domain name that the scan target is a member of
»
Registry
»
Shares
»
Users and groups.
Illustrates information related to the hardware found during an audit.
Lists all the shared folders found during an audit. The results are grouped by computer name.
Lists all the open ports found during an audit. The result are grouped by port type (TCP and UDP).
A technical report showing information retrieved during a specified scan. The report contains full details of the scanned computers and also auto– remediations performed after that scan.
A technical report containing the summary of the information retrieved during the last scan.
A technical report containing all the information during the last scan. The report contains full details for the scanned target.
A technical report containing all the information related to auto–remediations performed after the last scan.
Shows all changes detected during the last scan.
Shows all unauthorized applications installed on target machines found during an audit. Amongst others, the report includes information on:
»
Antivirus
»
Anti–spyware
»
Applications inventory.
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R
EPORT
N
AME
Unauthorized
Applications
Antivirus Applications
Scan History
Remediation History
Network Security
History
Baseline Comparison
D
ESCRIPTION
Lists all unauthorized applications installed scan targets.
Shows information related to the antivirus installed on scan targets.
An overview of the network security audits performed over time. Amongst others, the report includes information on:
»
Most scanned computers
»
Least scanned computers
»
Auditing status
»
History listing.
Shows information related to remediation actions performed on target computers. Amongst others, the report includes information on:
» Remediation actions per day
»
Remediation distribution by category
» Remediation list grouped by computers.
Shows the changes done on scan targets between audits. Amongst others, the report includes changes related to:
»
The vulnerability level
»
User accounts
»
Groups
»
Ports
»
Shares
»
Registry entries.
Enables you to compare the results of all scan targets to a base computer.
From the drop down list select the base computers and click Generate. The results are grouped by computer name and amongst others includes information on:
»
Registry
» Installed service packs
»
Missing patches
» Vulnerability level.
7.3 Generating reports
GFI LanGuard enables you to generate one–time reports or scheduled a reports. The sections below describe both scenarios.
7.3.1 One-time reporting
To generate a one–time reports:
1. Click Reports tab.
3. From the left pane, select if you want to report on the entire network or a specific scan target.
3. From Reports, select the report to generate.
4. Select items to report on.
5. (Optional) If you modified one of the default reports settings, GFI LanGuard enables you to save those settings as a new report. Click Save as new report.
6. Click Generate report.
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Screenshot 108 – Report sample
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7.3.2 Scheduled reports
GFI LanGuard enables you to automate reporting functions by scheduling reports. To schedule reports:
1. Click Reports tab.
2. From Actions, select New scheduled report….
Screenshot 109 – Scheduled reports settings
3. From Schedule report template, select the report template to generate.
4. (Optional) Key–in a valid report name and description.
5. Select your scan targets.
6. Configure the frequency of when the report is generated.
7. (Optional) Select Export to file and click Export settings to save the schedule report settings and use them with another report.
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8. (Optional) Select Send by email and click Alerting options to send the report by email and configure alerting options.
For information about Alerting options, refer to Configuring alerting options
section in this manual.
Scheduled reports options
To configure additional scheduled reports settings:
1. Click Scheduled reports options.
2. Click Alerting Options to configure email settings to use to send reports.
3. Click Storage Options to specify the format and the location where generated reports are saved.
By default, all generated reports are stored as PDF in:
C:\ProgramData\GFI\LanGuard 10\Reports.
For information about Alerting options, refer to Configuring alerting options
section in this manual.
7.4 Custom reports
GFI LanGuard enables you to create new reports based on an existing report.
1. From the Reports tab, select the existing report.
2. From the report sample in the right panel, click Customize report.
Screenshot 110 – Customize the report parameters
3. Configure the parameters described in Table 43 below:
Table 43 – Customize report parameters
T
AB NAME
D
ESCRIPTION
Report Items
Select the report items that will be included in the report. Check/Uncheck the report items.
Filters
Grouping & Sorting
Filter the report results. Select the criteria and key–in a value to be used as a filter.
Use this tab to configure sorting or grouping of report results. Select the group and the sorting order (Ascending or Descending).
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4. Click Save as new report… and in the Add report dialog key–in a valid report name and an optional description.
5. Click OK.
The new report is created in the report node selected in step 1.
7.4.1 Customizing report logos
GFI LanGuard enables you to use your company / custom logo in the built–in reports included in the product. Any inserted logos are placed in the header or footer of the report depending on the name.
Customize report header logo
1. Create / select your image.
2. Resize image to: Width = 624, Height = 25.
3. Rename the image to headerlogo.png.
4. Copy / paste image in Computer ► Local Disk (C:) ► ProgramData ► GFI ► LanGuard
10 ► Graphics ► Logo.
For OS versions prior to Windows Vista, paste image in My Computer ► C:\ ►
Documents and Settings ► All Users ► Application Data ► GFI ► LanGuard 10
► Graphics ► Logo.
Customize report footer logo
1. Create / select your image.
2. Resize image to: Width = 109, Height = 41.
3. Rename the image to footerlogo.png.
4. Copy / paste image in Computer ► Local Disk (C:) ► ProgramData ► GFI ► LanGuard
10 ► Graphics ► Logo.
For OS versions prior to Windows Vista, paste image in My Computer ► C:\ ►
Documents and Settings ► All Users ► Application Data ► GFI ► LanGuard 10
► Graphics ► Logo.
7.4.2 Customize email report format
For each scheduled email report type, there is a predefined HTML format file that includes placeholders delimited with „%‟ symbol (for example: %TITLE%, %NAME%). You can edit the
HTML format, edit HTML style, move and delete placeholders to further customize the e mail body of generated reports. The default template location is:
C:\ProgramData\GFI\LanGuard 10\Templates\template_mailbody.xml.
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Take into consideration that GFI LanGuard can only manage known placeholders (listed below) with their predefined role. Placeholders are usable in all scheduled report types.
Table 44 below describes the customizable placeholders:
Table 44 – Report placeholders
P
LACEHOLDER
%TITLE%
%NAME%
%DESCRIPTION%:
%TARGET%
%LAST_RUN%
%NEXT_RUN%
%PROFILE%
%DURATION%
%ITEMS_COUNT%
%AUTOREMED_MISSINGPATCHES%
%AUTOREMED_MISSINGSPS%
%AUTOREMED_UNINSTAPPS%
D
ESCRIPTION
Email title for the generated report.
Scheduled report name.
Scheduled report description.
Targets (computers, domains) represented in the scheduled report.
Last run date and time of the scheduled report.
Next run date and time of the scheduled report.
Note: this placeholder is used only for daily digest reports.
Scanning profile used whilst running the scheduled scan.
Note: this placeholder is used only for post–scheduled scan reports.
Scheduled scan duration.
NOTE: this placeholder is used only for post–schedules scan reports.
Collected items count.
NOTE: this placeholder is used only for post–scheduled scan reports.
Used in the report if Auto–remediate Missing Patches option is enabled for the scheduled scan.
NOTE: this placeholder is used only for post–scheduled scan reports.
Used in the report if Auto–remediate Missing Service Packs option is enabled for the scheduled scan.
NOTE: this placeholder is used only for post–scheduled scan reports.
Used in the report if Auto–remediate Uninstall Applications option is enabled for the scheduled scan.
NOTE: this placeholder is used only in post–scheduled scan reports.
7.5 Full text searching
The full text search feature returns results in a structured and configurable manner. Any returned results offer clickable links for further details.
To use the full text search feature:
1. Click Reports tab and Search sub tab.
2. Enter you search item and click Search.
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Screenshot 111 – Customize the report parameters
3. (Optional) Click Advanced search to configure filters to narrow your search results to something more specific.
4. Analyze the search results from the results section at the bottom.
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8 Scanning Profiles
8.1 Introduction
GFI LanGuard enables you to scan your IT infrastructure for particular vulnerabilities using pre–configured sets of checks known as scanning profiles. Scanning profiles enable you to scan your network targets and enumerate only specific information. For example, you may want to use a scanning profile that is set to be used when scanning the computers in your
DMZ as opposed to your internal network.
In practice, scanning profiles enable you to focus your vulnerability scanning efforts on to a specific area of your IT infrastructure such as identifying only missing security updates.
The benefit is that you have less scan results data to analyze; tightening up the scope of your investigation and quickly locate the information that you require more easily.
Through multiple scanning profiles, you can perform various network security audits without having to go through a reconfiguration process for every type of security scan required.
8.2 Scanning profile description
Out of the box, GFI LanGuard includes an extensive list of scanning profiles as described below.
8.2.1 Complete/Combination scans
Table 45 below describes in detail the scans involved in the Complete/Combination
scanning profile:
Table 45 – Complete/Combination scanning profiles
C
OMPLETE
/C
OMBINATION SCANNING PROFILES
Full Vulnerability
Assessment
Use this scanning profile to enumerate particular network vulnerabilities such as open TCP/UDP ports commonly exploited by Trojans as well as missing patches and service packs. The list of vulnerabilities enumerated by this profile can be customized through the Vulnerabilities tab. Installed USB devices and applications are not enumerated by this profile. This profile will scan for all vulnerabilities. This includes vulnerabilities which have an associated Microsoft patch to them and which are considered missing patches.
Full Scan (Active)
Use this scanning profile to retrieve system information as well as scan your network for all supported vulnerabilities including open TCP/UDP ports, missing patches and service packs, USB devices connected and more. The vulnerability check timeouts in this profile are specifically preconfigured to suite the network traffic and transmission delays usually associated with LAN environments.
Full Scan (Slow
Networks)
Use this scanning profile to retrieve system information as well as scan your network for all supported vulnerabilities including open TCP/UDP ports, missing patches and service packs, USB devices connected and more… The vulnerability check timeouts in this profile are specifically preconfigured to suite the network traffic and transmission delays usually associated with WAN environments.
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8.2.2 Vulnerability Assessment
Table 46 below describes in detail the scans involved in the Vulnerability Assessment
scanning profile:
Table 46 – Vulnerability assessment scanning profiles
V
ULNERABILITY ASSESSMENT SCANNING PROFILES
Top SANS 20
Vulnerabilities
Use this scanning profile to enumerate all vulnerabilities reported in the SANS top
20 list.
High Security
Vulnerabilities
Last Year's
Vulnerabilities
Only Web
Use this scanning profile to enumerate open TCP/UDP ports and high security vulnerabilities. The list of TCP/UDP ports and high security vulnerabilities that will be enumerated by this profile can be customized through the TCP/UDP Ports tabs and the Vulnerabilities tab respectively.
Use this scanning profile to enumerate network vulnerabilities that emerged during the last 12 months.
Use this scanning profile to identify web–server specific vulnerabilities. This includes scanning and enumerating open TCP ports that are most commonly used by web–servers such as port 80.
Only TCP ports commonly used by web–servers are scanned by this profile. Network auditing operations as well as enumeration of vulnerabilities and missing patches are not performed using this profile.
Missing Patches
Critical Patches
Use this scanning profile to enumerate missing patches. The list of missing patches that will be enumerated by this profile can be customized through the Patches tab.
Use this scanning profile to enumerate only missing patches that are tagged as critical. The list of critical patches that will be enumerated by this profile can be customized through the Patches tab.
Last Month's
Patches
Use this scanning profile to enumerate only missing patches that were released last month. The list of missing patches that will be enumerated by this profile can be customized through the Patches tab.
Only Service Packs Use this scanning profile to enumerate missing service packs. The list of service packs that will be enumerated by this profile can be customized through the
Patches tab.
8.2.3 Network & Software Audit
Table 47 below describes in detail the scans involved in the Network and Software audit
scanning profile:
Table 47 – Network and Software audit scanning profiles
N
ETWORK AND
S
OFTWARE
A
UDIT SCANNING PROFILES
Trojan Ports
Use this scanning profile to enumerate open TCP/UDP ports that are commonly exploited by known Trojans. The list of TCP/UDP ports to be scanned can be customized through the TCP Ports and UDP Ports tabs respectively.
Only the TCP/UDP ports commonly exploited by known Trojans are scanned by this profile. Network auditing operations as well as enumeration of other open TCP/UDP ports and missing patches are not performed by this profile.
Port Scanner
Software Audit
Full TCP & UDP
Scan
Only SNMP
Ping Them All
Use this scanning profile to enumerate open TCP/UDP ports including those most commonly exploited by Trojans. The list of ports that will be enumerated by this profile can be customized through the TCP/UDP ports tab.
Use this scanning profile to enumerate all software applications installed on scan targets. This includes security software such as anti–virus and anti–spyware.
Use this scanning profile to audit your network and enumerate all open TCP and UDP ports.
Use this scanning profile to perform network discovery and retrieve information regarding hardware devices (routers, switches, printers, etc.) that have SNMP enabled. This enables you to monitor network–attached devices for conditions that require administrative attention.
Use this scanning profile to audit your network and enumerate all computers that are currently connected and running.
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N
ETWORK AND
S
OFTWARE
A
UDIT SCANNING PROFILES
Share Finder
Use this scanning profile to audit your network and enumerate all open shares either hidden or visible.
No vulnerability checks are performed by this profile.
Uptimes
Disks Space
Usage
System
Information
Hardware Audit
Use this scanning profile to audit your network and identify how long each computer has been running since the last reboot.
Use this scanning profile to audit your network and retrieve system information on available storage space.
Use this scanning profile to retrieve system information such as operating system details, wireless/virtual/physical network devices connected, USB devices connected, installed applications and more.
Use this scanning profile to audit your network and enumerate all hardware devices currently connected to your network computers.
Network
Discovery
Use this scanning profile to enumerate any IP enabled device connected to your network.
8.2.4 Which scanning profile shall I use?
Select the scanning profile based on the:
»
Scope of your vulnerability analysis, that is, what you want to achieve out of your vulnerability scan. Based on these factors, you can determine the type of vulnerability checks to be performed and the information that you want to retrieve from your scan targets.
»
Time you have at your disposal for target vulnerability scanning. The more vulnerability checks you run the longer it will take the scan process to complete.
8.2.5 Creating a new scanning profile
The Scanning Profiles Editor allows you to create new scanning profiles. To create a new custom scanning profile:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click the GFI LanGuard button ► Configuration tab ► Scanning Profile Editor.
Screenshot 112 – Launch the scanning profiles editor
3. In Scanning Profiles Editor from Common Tasks, click New scanning profile…
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Screenshot 113 – The Scanning Profile Editor
4. Specify the name of the new profile and optionally select Copy all settings from an
existing profile to clone settings from an existing profile.
5. Click OK to save settings. The new scanning profile is added under Profiles in the left pane.
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8.3 Configure Vulnerabilities Assessment options
The scanning profiles that ship with GFI LanGuard are already pre–configured to run a number of vulnerability checks on selected target. You can however disable vulnerability scanning as well as customize the list of vulnerability checks executed during a scan.
Screenshot 114 – Scanning Profiles properties: Vulnerabilities tab options
8.3.1 Configure Vulnerabilities
To enable vulnerability scanning:
1. From the Vulnerability Assessment Options tab, click Vulnerabilities sub–tab.
2. Select the scanning profile to customize from the left pane under Profiles.
3. In the right pane, select Enable Vulnerability Scanning option.
Vulnerability scanning is configured on a scan profile by scan profile basis. If in a particular profile this option is not selected, no vulnerability tests will be performed in the security audits carried out by this scanning profile.
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Customizing the list of vulnerabilities to be scanned
To specify which vulnerabilities will be enumerated and processed by a scanning profile during a security audit:
1. From Vulnerability Assessment Options tab, select the scanning profile to customize from the left pane under Profiles.
Screenshot 115 – Select the vulnerability checks to be run by this scanning profile
2. In the right pane, select the vulnerability checks to execute through this scanning profile.
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Customizing the properties of vulnerability checks
All the checks listed in the Vulnerabilities tab have specific properties that determine when the check is triggered and what details will be enumerated during a scan.
Screenshot 116 – Vulnerability properties dialog: General tab
To change the properties of a vulnerability check:
1. Right–click on the vulnerability to customize, select Properties.
2. Customize the selected vulnerability check from the tabs described in Table 48 below:
Table 48 – Vulnerability properties dialog
T
AB NAME
D
ESCRIPTION
General
Use this tab to customize the general details of a vulnerability check including vulnerability check name, vulnerability type, OS family, OS version, Product,
Timestamp and Severity.
Conditions
Use this tab to configure the operational parameters of this vulnerability check.
These parameters will define whether a vulnerability check is successful or not. For information on how to configure vulnerability, check conditions refer to the
Vulnerability check conditions setup
Use this tab to customize the vulnerability check description.
Description
References
Use this tab to customize references and links that lead to relevant information in the OVAL, CVE, MS Security, Security Focus and SANS TOP 20 reports.
3. Click on OK to save your settings.
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Vulnerability check conditions setup
The Conditions tab enables you to add or customize conditions, which define whether the computer or network being scanned is vulnerable, or not. It is therefore of paramount importance that any custom checks defined in this section are set–up by qualified personnel that are aware of the ramifications of their actions.
Screenshot 117 – Vulnerability conditions setup tab
To add a vulnerability check condition:
1. Click Add.
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Screenshot 118 – Check properties wizard
2. Select the type of check to be configured and click Next.
3. Define the object to examine and click Next.
4. Set attributes/desired parameters and click Finish to finalize your settings.
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Screenshot 119 – Edit vulnerability
5. If more than one condition is set up, define conditional operators and click OK to finalize your configuration settings.
6. (Optional) Click Advanced… in the Vulnerabilities tab to launch the advanced vulnerabilities scanning options.
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Screenshot 120 – Advanced vulnerability scanning dialogs
The options in Advanced Vulnerabilities Options are used to:
»
Configure extended vulnerability scanning features that check your target computers for weak passwords, anonymous FTP access, and unused user accounts.
»
Configure how GFI LanGuard handles newly created vulnerability checks.
»
Configure GFI LanGuard to send CGI requests through a specific proxy server. This is mandatory when CGI requests will be sent from a computer that is behind a firewall to a target web server that is „outside‟ the firewall. For example, Web servers on a DMZ.
The firewall will generally block all the CGI requests that are directly sent by GFI
LanGuard to a target computer that is in front of the firewall. To avoid this, set the
Send CGI requests through proxy option to „Yes‟ and specify the name/IP address of your proxy server and the communication port which will be used to convey the CGI request to the target.
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8.3.2 Configuring patches
The Patches tab specifies the security updates checked during vulnerability scanning. The patches checked are selected from the complete list of supported software updates by default included in this tab. This list is automatically updated whenever GFI releases a new
GFI LanGuard missing patch definition file.
Screenshot 121 – Scanning Profiles properties: Patches tab options
Enabling/disabling missing patch detection checks
To enable missing patch detection checks in a particular scanning profile:
1. From the Vulnerability Assessment Options tab, click Patches sub–tab.
2. Select the scanning profile that you wish to customize from the left pane under
Profiles.
3. In the right pane, select Detect installed and missing service packs/patches option.
Missing patch scanning parameters are configurable on a scan profile by scan profile basis. Make sure to enable missing patch scanning in all profiles where missing patch scanning is required.
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Customizing the list of software patches to be scanned
To specify which missing security updates will be enumerated and processed by a scanning profile:
1. From the Vulnerability Assessment Options tab, click Patches sub–tab
2. Select the scanning profile to customize from the left pane under Profiles.
Screenshot 122 – Select the missing patches to enumerate
3. In the right pane, select/unselect which missing patches are enumerated by this scanning profile.
Searching for bulletin information
Screenshot 123 – Searching for bulletin information
To search for a particular bulletin:
1. From Vulnerability Assessment Options ► Vulnerabilities ► Find bulletin:, specify the bulletin name (for example, MS02–017) or QNumber (for example, Q311987) in the search tool entry box included at the bottom of the right pane.
2. Click Find to search for your entry.
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Screenshot 124 – Extended bulletin information
8.4 Configure Network & Software Audit options
The scanning profiles that ship with GFI LanGuard are already pre–configured to run a number of network and software audit checks on selected target. You can however disable scanning as well as customize the list of network and software audits executed during a scan.
8.4.1 Configuring TCP port scanning options
Screenshot 125 – Scanning Profiles properties: TCP Ports tab options
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Enabling/disabling TCP Port scanning
To enable TCP Port Scanning in a particular scanning profile:
1. From the Network & Security Audit Options tab, click TCP Ports sub–tab.
2. Select the scanning profile that you wish to customize from the left pane under
Profiles.
3. Select Enable TCP Port Scanning option.
Configuring the list of TCP ports to be scanned
To configure which TCP ports will be processed by a scanning profile:
1. From Network & Security Audit Options tab, click TCP Ports sub–tab.
2. Select scanning profile to customize from the left pane under Profiles.
3. Select TCP ports to analyze with this scanning profile.
Customizing the list TCP ports
1. From the Network & Security Audit Options tab, click TCP Ports sub–tab.
2. Select the scanning profile that you wish to customize from the left pane under
Profiles.
3. Customize the list of TCP Ports through Add, Edit or Remove.
The list of supported TCP/UDP Ports is common for all profiles. Deleting a port from the list will make it unavailable for all scanning profiles
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8.4.2 Configuring UDP port scanning options
Screenshot 126 – Scanning Profiles properties: UDP Ports tab options
Enabling/disabling UDP Port scanning
To enable UDP Port Scanning in a particular scanning profile:
1. From the Network & Security Audit Options tab, click UDP Ports sub–tab.
2. Select scanning profile to customize from the left pane under Profiles.
3. Select Enable UDP Port Scanning option.
Configuring the list of UDP ports to be scanned
To configure the UDP ports to process, select the required ports:
1. From the Network & Security Audit Options tab, click UDP Ports sub–tab.
2. Select the scanning profile to customize from the left pane under Profiles.
3. Select the UDP ports that will be analyzed by this scanning profile.
Customizing the UDP ports list
1. From the Network & Security Audit Options tab, click UDP Ports sub–tab.
2. Select the scanning profile to customize from the left pane under Profiles.
3. Customize the list of UDP Ports through Add, Edit or Remove.
The list of supported UDP ports is common for all profiles. Deleting a port from the list will make it unavailable for all scanning profiles.
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8.4.3 Configuring System Information options
Screenshot 127 – Scanning Profiles properties: System Information tab options
To specify what System Information is enumerated by a particular scanning profile:
1. From the Network & Security Audit Options tab, click System Information sub–tab.
2. Select the scanning profile that you wish to customize from the left pane under
Profiles.
3. From the right pane, expand the Windows System Information group or Linux System
Information group accordingly.
4. Select which Windows/Linux OS information is retrieved by the security scanner from scanned targets.
For example, to enumerate administrative shares in scan results, expand the Enumerate
shares option and set the Display admin shares option to „Yes‟.
8.4.4 Configuring Devices scanning options
Use the Devices tab to enumerate network devices. Together with device enumeration, you can further configure GFI LanGuard to generate high security vulnerability alerts whenever a USB or Network device is detected.
This is achieved by compiling a list of unauthorized/blacklisted Network and USB devices that you want to be alerted.
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Screenshot 128 – The network devices configuration page
GFI LanGuard can also exclude from the scanning process specific USB devices that you consider safe. Such devices can be a USB mouse or keyboard. This is achieved through a safe/white list of USB devices to ignored during scanning.
Similarly you can create a separate scanning profile that enumerates only Bluetooth dongles and wireless NIC cards connected to your target computers. In this case however, you must specify „Bluetooth‟ and „Wireless‟ or „WiFi‟ in the unauthorized network and USB lists of your scanning profile.
All the device scanning configuration options are accessible through the two sub–tabs contained in the devices configuration page. These are the Network Devices tab and the
USB Devices tab.
Use the Network Devices sub–tab to configure the attached network devices scanning options and blacklisted (unauthorized)/white–listed (safe) devices lists.
Use the USB Devices sub–tab to configure the attached USB devices scanning options and unauthorized/safe devices lists.
Enabling/disabling checks for all installed network devices
To enable network device (including USB device) scanning in a particular scanning profile:
1. From the Network & Security Audit Options tab, click Devices sub–tab
2. Click Network Devices tab
3. Select the scanning profile to customize from the left pane under Profiles.
4. From the right pane, select Enable scanning for hardware devices on target
computer(s).
Network device scanning is configurable on a scan profile by scan profile basis.
Make sure to enable network device scanning in all profiles where this is required.
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Compiling a network device blacklist/white–list
To compile a network device blacklist/white–list for a scanning profile:
1. From the Network & Security Audit Options tab, click Devices sub–tab.
2. Click Network Devices tab.
3. Select the scanning profile to customize from the left pane under Profiles.
4. In the right pane: to create a network device blacklist, specify which devices you want to classify as high security vulnerabilities in the space provided under Create a high
security vulnerability for network devices which name contains.
For example, if you enter the word „wireless‟ you will be notified through a high security vulnerability alert when a device whose name contains the word „wireless‟ is detected. To create a network device white–list, specify which devices you want to ignore during network vulnerability scanning in the space provided under Ignore (Do not list/save to db)
devices which name contains.
Only include one network device name per line.
Configuring advanced network device scanning options
Screenshot 129 – Advanced network devices configuration dialog
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From the Network Devices tab, you can also specify the type of network devices checked by this scanning profile and reported in the scan results. These include „wired network devices‟, „wireless network devices‟, „software enumerated network devices‟ and „virtual network devices‟.
To specify which network devices to enumerate in the scan results:
1. From the Network & Security Audit Options tab, click Devices sub–tab.
2. Click on the Network Devices tab (opens by default).
3. Select the scanning profile that you wish to customize from the left pane under
Profiles.
4. Click Advanced at the bottom of the page.
5. Set the required options to Yes. Click OK to finalize your settings.
Scanning for USB devices
Screenshot 130 – The Devices configuration page: USB Devices tab options
To compile a list of unauthorized/unsafe USB devices:
1. From the Network & Security Audit Options tab, click the Devices sub–tab.
2. Click USB Devices tab.
3. Select the scanning profile that you wish to customize from the left pane under
Profiles.
4. In the right pane. specify which devices you want to classify as high security vulnerabilities in the space provided under Create high security vulnerability for USB
devices which name contains:.
For example, if you enter the word „iPod‟, you will be notified through a high security vulnerability alert when a USB device whose name contains the word „iPod‟ is detected.
To create a USB device white–list, specify which USB devices you want to ignore during network vulnerability scanning in the space provided under Ignore (Do not list/save to db)
devices which name contains.
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Only include one USB device name per line.
8.4.5 Configuring applications scanning options
The Applications tab enables you to specify which applications will trigger an alert during a scan.
Screenshot 131 – The applications configuration page
Through this tab, you can also configure GFI LanGuard to detect and report unauthorized software installed on scanned targets and to generate high security vulnerability alerts whenever such software is detected.
Scanning installed applications
By default, GFI LanGuard also supports integration with particular security applications.
These include various anti–virus and anti–spyware software.
During security scanning, GFI LanGuard checks the correct configuration of virus scanner(s) or anti–spyware software and that the respective definition files are up to date.
Application scanning is configurable on a scan profile by scan profile basis and all the configuration options are accessible through the two sub–tabs contained in the
Applications tab. These are the Unauthorized Applications sub–tab and the Advanced
Options sub–tab.
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Enabling/disabling checks for installed applications
Screenshot 132 – The Applications tab: Installed Applications tab options
To enable installed applications scanning in a particular scanning profile:
1. From the Network & Security Audit Options tab, click on the Applications sub–tab.
2. Click on the Unauthorized Applications sub–tab.
3. Select the scanning profile that you wish to customize from the left pane under
Profiles.
4. Select the Enable scanning for installed applications on target computer(s) checkbox.
Installed applications scanning are configurable on a scan profile by scan profile basis. Make sure to enable installed applications scanning in all profiles where this is required.
Compiling installed applications blacklist/white–list
To compile installed applications blacklist/white–list:
1. From the Network & Security Audit Options tab, click Applications sub–tab.
2. Select Unauthorized Applications sub–tab.
3. Select the scanning profile to customize from the left pane under Profiles.
4. From the right pane, select Enable scanning for installed applications on target
computer(s) checkbox.
5. Specify the applications that are authorized for installation. Table 49 below describes
the available options:
Table 49 – Applications Options
O
PTION
Only the applications in the list below
D
ESCRIPTION
Specify names of applications that are authorized for installation. These applications will be ignored during a security scan.
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O
PTION
All applications except the ones in the list below
D
ESCRIPTION
Specify the names of the applications that are unauthorized for installation. Applications not in this list will be ignored during a security scan.
6. In the Ignore (Do not list/save to db) applications from the list below options key in applications by clicking Add. Any application listed is white–listed.
Include only one application name per line.
Advanced application scanning options
Screenshot 133 –The Applications configuration page: Advanced Options
GFI LanGuard ships with a default list of anti–virus and anti–spyware applications that can be checked during security scanning.
The Advanced Options tab enables you to configure when GFI LanGuard will generate high security vulnerability alerts if it detects certain configurations of a security application.
Alerts are generated when:
»
No anti–virus, anti–spyware or firewall is detected
»
A fake anti–virus or anti–spyware is detected
»
Anti–virus or anti–spyware definitions are not up to date
»
Anti–virus or anti–spyware real–time monitoring is turned off
»
Anti–virus or anti–spyware product is expired
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»
Anti–virus or anti–spyware product detects malware on the scanned computer(s)
»
Firewall is disabled
»
HTTP/FTP timeout when checking for product updates on remote sites. This option generates an alert if the number of seconds defined for timeout is exceeded.
Enabling/disabling checks for security applications
To enable checks for installed security applications in a particular scanning profile:
1. From the Network & Security Audit Options tab, click on the Applications sub–tab.
2. Click on the Advanced Options tab.
3. Select the scanning profile that you wish to customize from the left pane under
Profiles.
4. Select Enable scanning for installed applications on target computer(s) checkbox.
5. (Agent–less scans) Select Enable full security applications audit for agent–less scans checkbox.
Agent–less scans temporarily runs a small service on the remote computers in order to retrieve the relevant information.
Security applications scanning are configurable on a scan profile by scan profile basis. Make sure to enable security applications scanning in all profiles where this is required.
The number of supported security applications is constantly updated. Click the link available in order to get the latest version of the list. Configuring security applications – advanced options
To configure alerting triggers for installed security applications in a particular scanning profile:
1. From Network & Security Audit Options tab, click Applications sub–tab.
2. Click Advanced Options tab.
3. Select the scanning profile that you wish to customize from the left pane under
Profiles.
4. Select Enable scanning for installed applications on target computer(s) checkbox.
5. (Agent–less scans) Select Enable full security applications audit for agent–less scans checkbox.
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Screenshot 134 – Security Applications Alert Configuration
6. From the bottom–right pane, select the trigger you want to configure and choose between Yes or No from the drop down menu next to the respective alert trigger.
Security applications scanning are configurable on a scan profile by scan profile basis. Make sure to enable security applications scanning in all profiles where this is required.
8.5 Configuring the security scanning options
Use Scanner Options tab to configure the operational parameters of the security–scanning engine.
These parameters are configurable on a scan profile by scan profile basis and define how the scanning engine will perform target discovery and OS Data querying.
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Screenshot 135 – Scanning Profiles properties: Scanner Options tab
Configurable options include timeouts, types of queries to run during target discovery, number of scanning threads count, SNMP scopes for queries and more.
Configure these parameters with extreme care! An incorrect configuration can affect the security scanning performance of GFI LanGuard.
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9 Utilities
9.1 Introduction
Use the Utilities tab to access the following list of default network tools:
»
DNS Lookup
»
Traceroute
»
Whois
»
Enumerate Computers
»
Enumerate Users
»
SNMP Audit
»
SNMP Walk
»
SQL Server Audit
9.2 DNS lookup
DNS lookup resolves domain names into the corresponding IP address and retrieves particular information from the target domain (for example, MX record, etc.).
To resolve a domain/host name:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click Utilities tab and select DNS Lookup in the left pane under Tools.
3. Specify the hostname to resolve in the Hostname/IP to resolve textbox.
Screenshot 136 – The DNS Lookup tool
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4. Under Common Tasks in the left pane, click on Edit DNS Lookup options… or click
Options on the right pane and specify the information described in Table 50 below:
Table 50 –DNS lookup options
O
PTION
Basic Information
Host Information
Aliases
MX Records
NS Records
D
ESCRIPTION
Retrieve the host name and the relative IP address.
Retrieve HINFO details. The host information (known as HINFO) generally includes target computer information such as hardware specifications and OS details.
Retrieve information on the „A Records‟ configured on the target domain.
Enumerate all the mail servers and the order (i.e. priority) in which they receive and process emails for the target domain.
Specify the „name–servers‟ that are authoritative for a particular domain or sub domain.
Some DNS entries do not contain certain information for security reasons.
Screenshot 137 – The DNS Lookup tool
5. (Optional) Specify the alternative DNS server that will be queried by the DNS Lookup tool or leave as default to use the default DNS server.
6. Click Retrieve to start the process.
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9.3 Traceroute
Traceroute identifies the path that GFI LanGuard followed to reach a target computer.
Screenshot 138 – Trace route tool
To use the traceroute tool:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click Utilities tab and select Traceroute in the left pane under Tools.
3. In the Trace (domain/IP/name) dropdown, specify the name/IP or domain to reach.
4. (Optional) Under Common Tasks in the left pane, click on Edit Traceroute options… or click Options on the right pane to change the default options.
5. Click on the Traceroute button to start the tracing process.
Traceroute will break down, the path taken to a target computer into „hops‟. A hop indicates a stage and represents a computer that was traversed during the process.
The information enumerated by this tool includes the IP of traversed computers, the number of times that a computer was traversed and the time taken to reach the respective computer. An icon is also included next to each hop. This icon indicates the state of that particular hop. The icons used in this tool include:
Indicates a successful hop taken within normal parameters.
Indicates a successful hop, but time required was quite long.
Indicates a successful hop, but the time required was too long.
Indicates that the hop was timed out (> 1000ms).
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9.4 Whois
Whois looks up information on a particular domain or IP address.
Screenshot 139 – Whois tool
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click Utilities tab and select Whois in the left pane under Tools.
3. In Query (domain/IP/name) dropdown menu, specify the name/IP or domain to reach.
4. (Optional) From Common Tasks in the left pane, click Edit Whois options… or Options on the right pane to change the default options.
5. Click Retrieve to start the process.
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9.5 Enumerate computers
Screenshot 140 – Enumerate Computers tool
The enumerate computers utility identifies domains and workgroups on a network. During execution, this tool will also scan each domain/workgroup discovered so to enumerate their respective computers.
The information enumerated by this tool includes:
»
The domain or workgroup name
»
The list of domain/workgroup computers
»
The operating system installed on the discovered computers
»
Any additional details that might be collected through NetBIOS
Computers are enumerated using one of the following methods:
»
From Active Directory – This method is much faster and will include computers that are currently switched off.
»
From Windows Explorer – This method enumerates computers through a real–time network scan and therefore it is slower and will not include computers that are switched off.
To enumerate computers:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click Utilities tab and select Enumerate Computers in the left pane under Tools.
3. In the Enumerate computers in domain dropdown, select the desired domain.
4. From Common Tasks in the left pane, click Edit Enumerate Computers options… or
Options on the right pane.
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5. Select whether to enumerate computers from Active Directory or Windows Explorer.
6. Click Retrieve to start the process.
For an Active Directory scan, you will need to run the tool under an account that has access rights to the Active Directory
9.5.1 Starting a security scan
The Enumerate Computers tool scans your entire network and identifies domains and workgroups as well as their respective computers. After enumerating the computers in a domain or workgroup, you can use this tool to launch a security scan on the listed computers.
To start a security scan directly from the „Enumerate Computers‟ tool, right–click on any of the enumerated computers and select Scan.
You can also launch a security scan and at the same time continue using the Enumerate
Computers tool. This is achieved by right–clicking on any of the enumerated computers and selecting Scan in background.
9.5.2 Deploying custom patches
You can use the Enumerate Computers tool to deploy custom patches and third party software on the enumerated computers. To launch a deployment process directly from this tool:
1. Select the computers that require deployment.
2. Right–click on any of the selected computers and select Deploy Custom Patches.
9.5.3 Enabling auditing policies
The Enumerate Computers tool also allows you to configure auditing policies on particular computers. This is done as follows:
1. Select the computers on which you want to enable auditing policies.
2. Right–click on any of the selected computers and select Enable Auditing Policies…. This will launch the Auditing Policies configuration Wizard that will guide you through the configuration process.
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9.6 Enumerate users
Screenshot 141 – The Enumerate Users tool dialog
To scan the Active Directory and retrieve the list of all users and contacts included in this database:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click Utilities tab and select Enumerate Users in the left pane under Tools.
3. In the Enumerate users in domain dropdown menu, select the desired domain.
4. From Common Tasks in the left pane, click Edit Enumerate Users options… or Options on the right pane to filter the information to extract and display only the users or contacts details. In addition, you can optionally configure this tool to highlight disabled or locked accounts.
5. Click Retrieve to start the process.
This tool can enable or disable enumerated user accounts. Right–click on the account and select Enable/Disable account accordingly.
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9.7 SNMP Auditing
Screenshot 142 – SNMP Audit tool
This tool identifies and reports weak SNMP community strings by performing a dictionary attack using the values stored in its default dictionary file (snmp–pass.txt).
You can add new community strings to the default dictionary file by using a text editor (for example, notepad.exe).
You can also direct the SNMP Audit tool to use other dictionary files. To achieve this, specify the path to the dictionary file that you want to from the tool options at the right of the management console.
To perform SNMP audits on network targets and identify weak community strings:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click Utilities tab and select SNMP Audit in the left pane under Tools.
3. In the IP of computer running SNMP dropdown, specify the IP to reach.
4. From Common Tasks in the left pane, click on Edit SNMP Audit options… or Options on the right pane to edit the default options.
5. Click Retrieve to start the process.
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9.8 SNMP Walk
Screenshot 143 – SNMP Walk
To probe your network nodes and retrieve SNMP information (for example,
OID’s):
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click Utilities tab and select SNMP Walk in the left pane under Tools.
3. In the IP address dropdown menu, specify the IP address of the computer that you wish to scan for SNMP information.
4. From Common Tasks in the left pane, click Edit SNMP Walk options… or Options on the right pane to edit the default options such as providing alternative community strings.
5. Click Retrieve to start the process.
SNMP activity is normally blocked at the router / firewall so that internet users cannot SNMP scan your network. Malicious users can use information enumerated through SNMP scanning to hack your network / systems. Unless this service is required, it is highly recommended to disable it.
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9.9 SQL Server Audit
This tool allows you to test the password vulnerability of the „sa‟ account (i.e. root administrator), and any other SQL user accounts configured on the SQL Server. During the audit process, this tool will perform dictionary attacks on the SQL server accounts using the credentials specified in the „passwords.txt‟ dictionary file. However, you can also direct the SQL Server Audit tool to use other dictionary files. You can also customize your dictionary file by adding new passwords to the default list.
To perform a security audit on a particular Microsoft SQL server installation:
1. Launch GFI LanGuard management console from Start ► Programs ► GFI LanGuard
2011 ► GFI LanGuard 2011.
2. Click Utilities tab and select SQL Server Audit in the left pane under Tools.
Screenshot 144 –SQL Server Audit
3. In the Audit MS SQL Server dropdown menu, specify the IP address of the SQL Server that you wish to audit.
4. From Common Tasks in the left pane, click Edit SQL Server Audit options… or Options button on the right pane to edit the default options such as performing dictionary attacks on all the other SQL user accounts.
5. Click Audit to start the process.
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10 Using GFI LanGuard from the command line
10.1 Introduction
In this chapter you will discover how to use the three command line tools bundled with GFI
LanGuard; „lnsscmd.exe‟, „deploycmd.exe‟ and „impex.exe‟ These command line tools allow you to launch network vulnerability scans and patch deployment sessions as well as importing and exporting profiles and vulnerabilities without loading up the GFI LanGuard management console.
Configured through a set of command line switches, the complete list of supported switches together with a description of the respective function is provided below.
10.2 Using the command line scanning tool: lnsscmd.exe
The „lnsscmd.exe‟ command line target–scanning tool allows you to run vulnerability checks against network targets directly from the command line, or through third party applications, batch files and scripts. The „lnsscmd.exe‟ command line tool supports the following switches: lnsscmd [Target] [/profile=profileName] [/report=reportPath] [/output=pathToXmlFile]
[/user=username /password=password] [/UseComputerProfiles] [/email=emailAddress]
[/DontShowStatus] [/?]
Table 51 – Insscmd command switches
S
WITCH
D
ESCRIPTION
Target
Specify the IP / range of IPs or host name(s) to be scanned.
/Profile
/Output
/Report
(Optional) Specify the scanning profile that will be used during a security scan.
If this parameter is not specified, the scanning profile that is currently active in the GFI LanGuard will be used.
NOTE: In the management console, the default (i.e. currently active) scanning profile is denoted by the word (Active) next to its name. To view which profile is active expand the Configuration tab ► Scanning Profiles node.
(Optional) Specify the full path (including filename) of the XML file where the scan results will be saved.
(Optional) Specify the full path (including filename) of the HTML file where the scan results HTML report will be output/saved.
/User and /Password
(Optional) Specify the alternative credentials that the scanning engine will use to authenticate to a target computer during security scanning. Alternatively you can use the /UseComputerProfiles switch to use the authentication credentials already configured in the dashboard. For more information on how to configure
computer credentials using the dashboard, refer to
section in this manual.
/DontShowStatus
(Optional) Specify the email address on which the resulting report(s) will be sent at the end of this scan. Reports will be emailed to destination through the mail server currently configured in the Configuration tab ► Alerting Options node (of the management console).
(Optional) Include this switch if you want to perform silent scanning. In this way, the scan progress details will not be shown.
/?
(Optional) Use this switch to show the command line tool usage instructions.
Always enclose full paths and profile names within double quotes. For example,
“[path or path name]” or “C:\temp\test.xml”.
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The command line target–scanning tool allows you to pass parameters through specific variables. These variables will be automatically replaced with their respective value during
execution. Table 52 below describes the supported variables:
Table 52 – Supported variables in inssmcd
S
UPPORTED VARIABLE
D
ESCRIPTION
%INSTALLDIR%
During scanning, this variable will be replaced with the path to the GFI
LanGuard installation directory.
%TARGET%
%SCANDATE%
During scanning this variable will be replaced with the name of the target computer.
During scanning this variable will be replaced with the date of scan.
%SCANTIME%
During scanning this variable will be replaced with the time of scan.
For example, how to launch target computer scanning from the command line tool. For this example, we will be assuming that a scan with the following parameters is required:
1. Perform a security scan on a target computer having IP address „130.16.130.1‟.
2. Output the scan results to „c:\out.xml‟ (i.e. XML file).
3. Generate an HTML report and save it in „c:\result.html‟.
4. Send the HTML report via email to „[email protected]‟
The command line tool instruction for this particular security scan is: lnsscmd.exe 130.16.130.1 /Profile="Default" /Output="c:\out.xml" /Report="c:\result.html"
/email="[email protected]"
10.3 Using the command line patch deployment tool: deploycmd.exe
The „deploycmd.exe‟ command line patch deployment tool allows you to deploy Microsoft patches and third party software on remote targets directly from the command line, or through third party applications, batch files or scripts. The „deploycmd.exe‟ command line tool supports the following switches: deploycmd [target] [/file=FileName] [/username=UserName /password=Password]
[/UseComputerProfiles] [/warnuser] [/useraproval] [/stopservices]
[/customshare=CustomShareName] [/reboot] [/rebootuserdecides] [/shutdown]
[/deletefiles] [/timeout=Timeout(sec)] [/?]
Table 53 – deploycmd command switches
S
WITCH
D
ESCRIPTION
Target
Specify the name(s), IP or range of IPs of the target computer(s) on which the patch(es) will be deployed.
/File
/User and /Password
Specify the file that you wish to deploy on the specified target(s).
(Optional) Specify the alternative credentials that the scanning engine will use to authenticate to a target computer during patch deployment.
Alternatively you can use the /UseComputerProfiles switch to use the authentication credentials already configured in the Dashboard. For more information on how to configure computer credentials using the dashboard,
/warnuser
(Optional) Include this switch if you want to inform the target computer user that a file/patch installation is in progress. Users will be informed through a message dialog that will be shown on screen immediately before the deployment session is started.
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S
WITCH
/useraproval
/stopservice
/customshare
/reboot
/rebootuserdecides
/shutdown
/deletefiles
/timeout
/?
D
ESCRIPTION
(Optional) Include this switch to request the user‟s approval before starting the file/patch installation process. This allows users to postpone the file/patch installation process for later (for example, until an already running process is completed on the target computer).
(Optional) Include this switch if you want to stop specific services on the target computer before installing the file/patch.
NOTE: You cannot specify the services that will be stopped directly from the command line tool. Services can only be added or removed through the management console.
(Optional) Specify the target share where you wish to transfer the file before it is installed.
(Optional Parameter) Include this switch if you want to reboot the target computer after file/patch deployment.
(Optional Parameter) Include this switch to allow the current target computer user to decide when to reboot his computer (after patch installation).
(Optional Parameter) Include this switch if you want to shutdown the target computer after the file/patch is installed.
(Optional Parameter) Include this switch if you want to delete the source file after it has been successfully installed.
(Optional Parameter) Specify the deployment operation timeout. This value defines the time that a deployment process will be allowed to run before the file/patch installation is interrupted.
(Optional) Use this switch to show the command line tool‟s usage instructions.
For example, how to launch a patch deployment process from the command line tool.
For this example, we will be assuming that a patch deployment session with the following parameters is required:
1. Deploy a file called „patchA001002.XXX‟.
2. On target computer „TMJohnDoe‟.
3. Reboot the target computer after successful deployment of the file.
The command line tool instruction for this particular patch deployment session is: deploycmd TMJohnDoe /file=”patchA001002.XXX” /reboot
10.4 Using the command line import and export tool: impex.exe
The Impex tool is a command line tool that can be used to Import and Export profiles and vulnerabilities from GFI LanGuard Network Security Scanner. The parameters supported by this tool are the following: impex [[/H] | [/?]] | [/XML:xmlfile [/DB:dbfile] [[/EX] [/MERGE]] | [/IM [/ONLYNEWER]]
[/PROFILES | /VULNS | /PORTS | /PROFILE:name | /VULNCAT:cat [/VULN:name]
/PORTTYPE:type [/PORT:number]] [/SKIP | /OVERWRITE | /RENAME:value]]
Table 54 – impex command switches
O
PTION
H, /?, running without parameters
/XML:<xmlfile>
D
ESCRIPTION
Displays help information.
This parameter specifies the name of the imported or exported XML file.
<xmlfile> needs to be replaced with the name of the file the profile is being exported to.
NOTE: This parameter is mandatory to import or export alerts.
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O
PTION
/DB:<dbfile>
/EX
/MERGE
/IM
/ONLYNEWER
/PROFILES
/VULNS
/PORTS
/PROFILE:<name>
/VULNCAT:<category>
/VULN:<name>
/PORTTYPE:<type>
/PORT:<number>
/SKIP
/OVERWRITE
/RENAME:<value>
D
ESCRIPTION
Where <dbfile> is the database file to be used during the import/export operation. If this is not specified the default "operationsprofiles.mdb" file will be used.
Exports data from database to XML file (Default option)
If this is specified when the target XML for export already exists, the file will be opened and data will be merged; otherwise the XML file is first deleted.
Imports data from XML file to database
When specified only vulnerabilities newer than the newest vulnerability in the database will be imported.
Exports/Imports all scanning profiles.
Exports/Imports all vulnerabilities.
Exports/Imports all ports
Exports/Imports the specified scanning profile.
Exports/Imports all vulnerabilities of the specified category.
Exports/Imports the specified vulnerability (/VULNCAT must be specified).
Exports/Imports all ports of the specified type.
Exports/Imports the specified port (/PORTTYPE must be specified).
If an item already exists in the target XML/database, that item will be skipped
If an item already exists in the target XML/database, that item will be overwritten.
If an item already exists in the target XML/database, that item will be renamed to <value>. If /PROFILE or /VULN was specified, port information merged with that item is a port or renamed by prefixing its name with <value> in any other case.
Example, to export a specific alert:
» impex /xml:regcheck.xml /vuln:"Blaster Worm" /vulncat:"Registry Vulnerabilities"
Example: To import a whole XML file:
» impex /xml:regcheck.xml /im
The Impex executable can be located in the GFI LanGuard installation folder.
If the specified <xmlfile>, <dbfile>, <name>, <category> or <value> contain any space character, the whole value must be placed between double quotes.
It is highly recommended not to use the Impex tool if GFI LanGuard application (LanGuard.exe) or LanGuard scanning profiles (scanprofiles.exe) are running.
For example, /VULN:"Apache: Apache doc directory"
It is recommended that if the vulnerabilities are imported into another installation; that installation will have the same build number as the one the database has been exported from.
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11 Adding vulnerability checks
11.1 Introduction
Scripts that identify custom vulnerabilities can be created using any VBScript compatible scripting language. By default, GFI LanGuard ships with a script editor that you can use to create your custom scripts.
New checks must be included in the list of checks supported by GFI LanGuard. Use the
Vulnerability Assessment tab to add new checks to the default list of vulnerability checks on a scan profile by scan profile basis.
GFI LanGuard also supports Python scripting. For more information on GFI LanGuard Python scripting, refer to this section in this manual.
Only expert users should create new vulnerability checks. Scripting errors and wrong configurations in a vulnerability check can result in false positives or provide no vulnerability information at all.
11.2 GFI LanGuard VBscript language
GFI LanGuard supports and runs scripts written in VBscript compatible languages. Use
VBscript compatible languages to create custom scripts that can be run against your network targets.
Security auditing scripts can be developed using the script editor that ships with GFI
LanGuard. This built–in script editor includes syntax highlighting capabilities as well as debugging features that support you during script development. Open the script editor from Start ► Programs ► GFI LanGuard 2011 ► LanGuard Script Debugger.
For more information on how to develop scripts using the built–in script editor, refer to the Scripting documentation help file included in Start ► Programs ►
GFI LanGuard 2011 ► LanGuard Scripting documentation.
GFI does not support requests related to problems in custom scripts. You can post any queries that you may have about GFI LanGuard forums at http://forums.gfi.com/ . Through this forum, you are able to share scripts, problems and ideas with other GFI LanGuard users.
11.2.1 Adding a vulnerability check that uses a custom VB (.vbs) script
To create new vulnerability checks that use custom VBscripts:
»
Step 1: Create the script.
»
Step 2: Add the new vulnerability check.
The following are examples of how this is done.
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Step 1: Create the script
1. Launch the Script Debugger from Start ► Programs ► GFI LanGuard 2011 ► LanGuard
Script Debugger.
2. Go on File ► New…
3. Create a script. For this example, use the following sample script code.
Function Main echo "Script has run successfully"
Main = true
End Function
4. Save the script in „<LanGuard installation folder path> \Data\Scripts\myscript.vbs‟.
Step 2: Add the new vulnerability check
1. Open the GFI LanGuard management console.
2. Click Configuration tab, and select Scanning Profiles.
3. Click Vulnerability Assessment sub–node and from the middle pane, select the category in which the new vulnerability check will be included (for example, High Security
Vulnerabilities).
Screenshot 145 – The new vulnerability check dialog
4. In the new window, add a new vulnerability by clicking Add... in the middle pane.
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5. Go through the General, Description and References tabs while specifying the basic details such as the vulnerability name, short description, security level and OVAL ID (if applicable).
6. Click the Conditions tab and click on the Add… button. This will bring up the check properties wizard.
Screenshot 146 – The check triggering conditions dialog
7. Select Independent checks ► VBScript node and click Next button to continue setup.
8. Click Choose file and select the custom VBscript file that will be executed by this check (For this example select „myscript.vbs‟). Click Next to proceed.
9. Select the relative condition setup in the wizard to finalize script selection. Click Finish to exit wizard.
10. Click OK to save new vulnerability check.
Testing the vulnerability check/script used in example
Scan your local host computer using the scanning profile where the new check was added.
In Scan tab ► Results, a vulnerability warning will be shown in the Vulnerability
Assessment node of the scan results.
11.3 GFI LanGuard SSH Module
GFI LanGuard includes an SSH module which handles the execution of vulnerability scripts on Linux/UNIX based systems.
The SSH module determines the result of vulnerability checks through the console (text) data produced by an executed script. This means that you can create custom Linux/UNIX
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vulnerability checks using any scripting method that is supported by the target operating system.
11.3.1 Keywords
The SSH module can run security scanning scripts through its terminal window. When a security scan is launched on Linux/UNIX based target computers, vulnerability checking scripts are copied through an SSH connection to the respective target computer and run locally.
The SSH connection is established using the logon credentials (i.e. username and password/SSH Private Key file) specified prior to the start of a security scan.
The SSH module can determine the status of a vulnerability check through specific keywords present in the text output of the executed script. These keywords are processed by the module and interpreted as instruction for the GFI LanGuard. Standard keywords identified by the SSH module include:
»
TRUE:
»
FALSE:
»
AddListItem
»
SetDescription
»
!!SCRIPT_FINISHED!!
Each of these keywords triggers an associated and specific process in the SSH Module. The function of each keyword is described below:
»
TRUE: / FALSE: – These strings indicate the result of the executed vulnerability check/script. When the SSH module detects a TRUE: it means that the check was successful; FALSE: indicates that the vulnerability check has failed.
»
AddListItem – This string triggers an internal function that adds results to the vulnerability check report (i.e. scan results). These results are shown in the GFI
LanGuard 2011 management console after completion of a scan. This string is formatted as follows:
»
AddListItem([[[[parent node]]]],[[[[actual string]]]])
»
[[[[parent node]]]] – Includes the name of the scan results node to which the result will be added.
»
[[[[actual string]]]] – Includes the value that will be added to the scan results node.
Each vulnerability check is bound to an associated scan result node. This means that „AddListItem‟ results are by default included under an associated/default vulnerability node. In this way, if the parent node parameter is left empty, the function will add the specified string to the default node.
»
SetDescription – This string triggers an internal function that will overwrite the default description of a vulnerability check with a new description. This string is formatted as follows: SetDescription([New description])
»
!!SCRIPT_FINISHED!! – This string marks the end of every script execution. The SSH module will keep looking for this string until it is found or until a timeout occurs. If a timeout occurs before the „!!SCRIPT_FINISHED!!‟ string is generated, the SSH module will classify the respective vulnerability check as failed.
It is imperative that every custom script outputs the „!!SCRIPT_FINISHED!!‟ string at the very end of its checking process
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11.3.2 Adding a vulnerability check that uses a custom shell script
In the following example we will create a vulnerability check (for Linux based targets) which uses a script written in Bash. The vulnerability check in this example will test for the presence of a dummy file called „test.file‟
Step 1 : Create the script
1. Launch your favorite text file editor.
2. Create a new script using the following code:
#!/bin/bash if [ –e test.file ] then echo "TRUE:" else echo "FALSE:" fi echo "!!SCRIPT_FINISHED!!"
3. Save the file in <GFI LanGuard 2011 installation folder path> ..\Data\Scripts\myscript.sh
Step 2: Add the new vulnerability check
1. Open the GFI LanGuard 2011 management console.
2. Click Configuration tab, expand the Scanning Profiles and click Vulnerability
Assessment sub–node.
3. From the middle pane, select the category in which the new vulnerability check will be included (for example, High Security Vulnerabilities…).
4. In the new window, add a new vulnerability by clicking Add... in the middle pane.
5. Go through the General, Description and Reference tabs while specifying the basic details such as the vulnerability name, short description, security level and OVAL ID (if applicable).
6. Choose the Conditions tab and click Add… button. This will bring up the check properties wizard.
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Screenshot 147 – The check triggering conditions dialog
7. Select Unix checks ► SSH Script Test node and click on Next button to continue setup.
8. Click Choose file and select the custom SSH Script file that will execute during this check (For this example select „myscript.sh‟). Click Next to proceed.
9. Select the relative condition setup in the wizard to finalize script selection. Click Finish to exit wizard.
10. Click OK to save new vulnerability check.
Testing the vulnerability check/script used in our example
Scan your local host computer using the scanning profile where the new check was added.
1. Log on to a Linux target computer and create a file called ‘test.file’. This check will generate a vulnerability alert if a file called 'test.file' is found.
2. Launch a scan on the Linux target where you created the file.
3. Check you scan results.
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11.4 Python scripting
GFI LanGuard also supports a new type of vulnerability checks – Python Script Test. This type of check is available under the Independent Checks type.
Screenshot 148 – Independent checks: Python Script Test
For more information on Python scripting refer to the GFI LanGuard scripting documentation located in Start menu ► Programs ► GFI LanGuard 2011.
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12 GFI LanGuard certifications
12.1 Introduction
GFI LanGuard is OVAL and CVE certified.
12.2 About OVAL
Open Vulnerability and Assessment Language (OVAL™) is an international, information security, community standard to promote open and publicly available security content, and to standardize the transfer of this information across the entire spectrum of security tools and services. OVAL includes a language used to encode system details, and an assortment of content repositories held throughout the OVAL community. The language standardizes the three main steps of the assessment process:
»
Representing configuration information of systems for testing
»
Analyzing the system for the presence of the specified machine state (vulnerability, configuration, patch state, etc.)
»
Reporting the results of this assessment.
»
The repositories are collections of publicly available and open content that utilize the language.
The OVAL community has developed three XML schemas to serve as the framework and vocabulary of the OVAL Language. These schemas correspond to the three steps of the assessment process:
»
An OVAL System Characteristics schema for representing system information
»
An OVAL Definition schema for expressing a specific machine state
»
An OVAL Results schema for reporting the results of an assessment
Content written in OVAL Language is located in one of .the many repositories found within the community. One such repository, known as the OVAL Repository, is hosted by MITRE
Corporation. It is the central meeting place for the OVAL Community to discuss, analyze, store, and disseminate OVAL Definitions. Each definition in the OVAL Repository determines whether a specified software vulnerability, configuration issue, program, or patch is present on a system.
The information security community contributes to the development of OVAL by participating in the creation of the OVAL Language on the OVAL Developers Forum and by writing definitions for the OVAL Repository through the OVAL Community Forum. An OVAL
Board consisting of representatives from a broad spectrum of industry, academia, and government organizations from around the world oversees and approves the OVAL
Language and monitors the posting of the definitions hosted on the OVAL Web site. This means that the OVAL, which is funded by US–CERT at the U.S. Department of Homeland
Security for the benefit of the community, reflects the insights and combined expertise of the broadest possible collection of security and system administration professionals worldwide.
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12.2.1 GFI LanGuard OVAL Support
GFI LanGuard supports all checks defined in the XML file issued by OVAL, with the exception of HP–UX checks.
GFI LanGuard does not support HP–UX based machines and therefore it is beyond the scope of this product to include these checks within its check definition database.
12.2.2 About OVAL Compatibility
OVAL Compatibility is a program established to develop consistency within the security community regarding the use and implementation of OVAL. The main goal of the compatibility program is to create a set of guidelines that will help enforce a standard implementation. An offshoot of this is that users are able to distinguish between, and have confidence in, compatible products knowing that the implementation of OVAL coincides with the standard set forth.
For a product or service to gain official OVAL Compatibility, it must adhere to the
Requirements and Recommendations for OVAL Compatibility and complete the formal
OVAL Compatibility Process.
OVAL Compatibility means that GFI LanGuard incorporates OVAL in a pre–defined, standard way and uses OVAL for communicating details of vulnerabilities, patches, security configuration settings, and other machine states.
12.2.3 Submitting OVAL listing error reports
Any issues with the GFI LanGuard or the listing of the OVAL checks included with GFI
LanGuard should be reported to GFI through its official support lines. Refer to the
Troubleshooting section within this manual for more information regarding email, phone or
web forum support channels.
GFI Software Ltd will endeavor to look into any issues reported and if any inconsistency or error is ascertained, it will issue updates to fix such issues. Vulnerability check updates are usually released on monthly basis.
12.3 About CVE
CVE (Common Vulnerabilities and Exposures) is a list of standardized names for vulnerabilities and other information security exposures. Its aim is to standardize the names for all publicly known vulnerabilities and security exposures.
CVE is a dictionary which aim is to facilitate data distribution across separate vulnerability databases and security tools. CVE makes searching for information in other databases easier and should not be considered as a vulnerability database by itself.
CVE is a maintained through a community–wide collaborative effort known as the CVE
Editorial Board. The Editorial Board includes representatives from numerous security– related organizations such as security tool vendors, academic institutions, and governments as well as other prominent security experts. The MITRE Corporation maintains
CVE and moderates editorial board discussions.
12.3.1 About CVE Compatibility
"CVE–compatible" means that a tool, Web site, database, or service uses CVE names in a way that allows it to cross–link with other repositories that use CVE names. CVE– compatible products and services must meet the four requirements:
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CVE Searchable: A user must be able to search for vulnerabilities and related information using the CVE name.
CVE Output: Information provided must include the related CVE name(s).
Mapping: The repository owner must provide a mapping relative to a specific version of
CVE, and must make a good faith effort to ensure accuracy of that mapping.
Documentation: The organization‟s standard documentation must include a description of
CVE, CVE compatibility, and the details of how its customers can use the CVE–related functionality of its product or service.
For an in–depth understanding of CVE compatibility refer to the complete list of
CVE requirements available at: http://cve.mitre.org/compatible/requirements.html
12.3.2 About CVE and CAN
CVE names (also called "CVE numbers," "CVE–IDs," and "CVEs") are unique, common identifiers for publicly known information security vulnerabilities. CVE names have "entry" or "candidate" status. Entry status indicates that the CVE name has been accepted to the
CVE List while candidate status (also called "candidates," "candidate numbers," or "CANs") indicates that the name is under review for inclusion in the list.
Each CVE name includes the following:
»
CVE identifier number (i.e. "CVE–1999–0067").
»
Indication of "entry" or "candidate" status.
»
Brief description of the security vulnerability or exposure.
»
Any pertinent references (i.e., vulnerability reports and advisories or OVAL–ID).
For an in–depth understanding of CVE names and CANs, refer to: http://cve.mitre.org/cve/identifiers/index.html
12.3.3 Searching for CVE entries in GFI LanGuard
CVE entries can be searched from the Scanning profiles node within the Configuration tab.
Screenshot 149 – Searching for CVE information
To search for a particular CVE bulletin:
1. Specify the bulletin name (for example, CVE–2005–2126) in the search tool entry box included at the bottom of the right pane.
2. Click on Find to start searching for your entry.
12.3.4 Obtaining CVE names
CVE entry names can be obtained through the GFI LanGuard user interface from within the
Scanning profiles node within the Configuration tab. By default, the CVE ID is displayed for all the vulnerabilities that have a CVE ID.
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12.3.5 Importing and exporting CVE Data
CVE data can be exported through the impex command line tool. For more information on
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13 Miscellaneous
13.1 Enabling NetBIOS on a network computer
1. In Microsoft Windows 7 and Microsoft Windows Vista, navigate to Control Panel ►
Network and Internet ► Network and Sharing Center ► Change adapter settings.
In Microsoft Windows XP, click Control Panel ► Network Connections.
2. Right–click on Local Area Connection and select Properties.
3. Click Internet Protocol (TCP/IP) and select Properties.
4. Click Advanced ► WINS.
Screenshot 150 – Local Areas Connection properties: WINS tab
5. Select the Default option from the NetBIOS Setting area.
6. Click OK and exit the Local Area Properties dialog(s).
If static IP is being used or the DHCP server does not provide NetBIOS setting, select the Enable NetBIOS over TCP/IP option
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14 Troubleshooting
14.1 Introduction
The troubleshooting chapter explains how you should go about resolving any software issues that you might encounter. It explains the use of the GFI LanGuard troubleshooting wizard. The main sources of information available to users are:
»
The manual – most issues can be solved by reading this manual.
»
The GFI Knowledge Base – http://kbase.gfi.com
»
The GFI technical support site – http://support.gfi.com
»
The GFI Web forum – http://forums.gfi.com/
»
Contacting the GFI technical support team by email at [email protected]
»
Contacting the GFI technical support team using our live support service at http://support.gfi.com/livesupport.asp
»
Contacting our technical support team by telephone.
14.2
Common Issues
Table 55 – GFI LanGuard common issues
I
SSUE
ENCOUNTERED
S
OLUTION
/ D
ESCRIPTION
When trying to access the
Change database tab while configuring an
SQL database, a
Failed to connect to database error
is encountered.
Description:
This issue may occur when the following two conditions are met:
GFI LanGuard is installed on Windows 2000 SP4 with MDAC 2.5 SP 3.
And
The database backend is Microsoft SQL having the database instance name different from the SQL machine name.
Solution:
Install Microsoft Data Access Components (MDAC 2.6 or later) on the GFI LanGuard machine and try again.
MDAC can be downloaded from: http://www.microsoft.com/downloads/details.aspx?FamilyID=6c050f e3–c795–4b7d–b037–185d0506396c&displaylang=en
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I
SSUE
ENCOUNTERED
Incomplete results and errors when scanning remote machines.
GFI LanGuard program updates not working.
Firewall installed on GFI LanGuard is blocking connection with target computers.
GFI LanGuard is failing to retrieve workgroup computers when using Enumerate
Computers.
S
OLUTION
/ D
ESCRIPTION
Description:
Errors similar to the following may be encountered:
»
Failed to open test key to remote registry.
»
The scan will not continue.
»
Access Denied.
»
Could not connect to remote SMB server.
These errors may be encountered because:
»
The remote machine has an account similar to the one used by GFI LanGuard to log in as an administrator.
»
The user account used by GFI LanGuard does not have administrative privileges.
Solution:
To solve this issue do one of the following:
»
Log on the GFI LanGuard machine and configure GFI LanGuard to use an alternate domain administrator account.
»
Delete the local user account on the remote machine.
»
Launch GFI LanGuard executable with „Run As‟ using a Domain Administrator account.
For more information refer to http://kbase.gfi.com/showarticle.asp?id=KBID003125
.
Description:
Updates will not work if GFI LanGuard machine does not have a direct connection to the internet.
Solution:
To solve this issue do one of the following:
» Configure GFI LanGuard machine to have direct internet access.
»
Install another instance of GFI LanGuard on a machine with internet access and configure GFI LanGuard to check for updates from the new installation.
For more information refer to http://kbase.gfi.com/showarticle.asp?id=KBID002062
Description:
Scanning might slow down or blocked if a firewall is installed on GFI LanGuard machine.
Solution:
Configure the firewall to allow the following components in outbound connections:
»
<..\Program Files\GFI\LanGuard>\LanGuard.exe
»
<..\Program Files\GFI\LanGuard>\lnsscomm.exe
»
<..\Program Files\GFI\LanGuard>\lnssatt.exe
»
<..\Program Files\GFI\LanGuard>\update.exe
Description:
GFI LanGuard uses the Windows mechanism to retrieve the machines within a workgroup. In this mechanism a Master Browser computer will create and store a list of all computers. In some cases, the Master Browser role can fail resulting in GFI
LanGuard not retrieving computers information.
To solve this issue, refer to http://kbase.gfi.com/showarticle.asp?id=KBID003483
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I
SSUE
ENCOUNTERED
GFI LanGuard found open ports that another port scanner found closed.
S
OLUTION
/ D
ESCRIPTION
Description:
GFI LanGuard uses a different approach than other port scanners to detect open ports.
Solution:
To view the status of a port and determine if the port is closed or opened:
1. Click Start ► Programs ► Accessories ► Command Prompt.
2. Key in netstat –an, and press Enter.
3. The generated list displays all computer active connections.
For more information refer to: http://www.microsoft.com/resources/documentation/windows/xp/a ll/proddocs/en–us/netstat.mspx?mfr=true
.
14.3 The Troubleshooting wizard
The GFI LanGuard troubleshooting wizard is a tool designed to assist you when encountering technical issues related to GFI LanGuard‟s use.
To use the GFI LanGuard troubleshooting wizard:
1. Launch the troubleshooting wizard from the Start ► Programs ► GFI LanGuard 2011
► GFI LanGuard 2011 Troubleshooter.
2. Click Next in the introduction page.
Screenshot 151 – Troubleshooter wizard – Information details
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3. In the Information details page select one of the following options described below:
Table 56 – Information gathering options
O
PTION
D
ESCRIPTION
Automatically detect and fix known issues
(Recommended) Configure GFI LanGuard to automatically detect and fix issues.
Gather logs to send to GFI support.
Gather only application information and logs
4. Click Next to continue.
Screenshot 152 – Troubleshooter wizard – Gathering information about known issues
5. The troubleshooter wizard will retrieve all the information required to solve common issues. Click Next to continue.
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Screenshot 153 – Troubleshooter fixed known issues
6. The troubleshooter will fix any known issues that it encounters. Select Yes if your problem was fixed or No if your problem is not solved to search the GFI Knowledge base for information.
14.4 Knowledge Base
GFI maintains a Knowledge Base, which includes answers to the most common problems.
The Knowledge Base always has the most up–to–date listing of technical support questions and patches. To access the Knowledge Base, visit http://kbase.gfi.com/ .
14.5 Web Forum
User to user technical support is available via the web forum. The forum can be found at: http://forums.gfi.com/ .
14.6 Request technical support
If you have referred to this manual and our Knowledge Base articles, and you still cannot solve issues with the software, contact the GFI Technical Support team by filling in an online support request form or by phone.
Online: Fill out the support request form on: http://support.gfi.com/supportrequestform.asp
. Follow the instructions on the page to submit your support request.
Phone: To obtain the correct technical support phone number for your region visit: http://www.gfi.com/company/contact.htm
. We will answer your query within 24 hours or less depending on your time zone.
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Before you contact our Technical Support team ensure that you have your
Customer ID available. Your Customer ID is the online account number that is assigned to you when you first register your license keys in our Customer Area at http://customers.gfi.com.
14.7 Build notifications
We strongly suggest that you subscribe to our build notifications list. This way, you will be immediately notified about new product builds. To subscribe to our build notifications, visit: http://www.gfi.com/pages/productmailing.htm
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15 Glossary
T
ERM
Active Directory
AD
Anti–spyware
Anti–virus
Apache web server
Applications auto– uninstall
Auto–download
Auto–patch management
Auto–remediation
Backdoor program
Batch–files
Blacklist
Bluetooth
Bulletin Information
CGI requests
Common Gateway
Interface
Common
Vulnerabilities and
Exposures
CVE
Dashboard
Demilitarized Zone deploycmd.exe
DMZ
DNS
DNS Lookup tool
Domain Name System
D
ESCRIPTION
A technology that provides a variety of network services, including LDAP–like directory services.
See Active Directory
A software countermeasure that detects spyware installed on a computer without the user‟s knowledge.
A software countermeasure that detects malware installed on a computer without the user‟s knowledge.
An open source HTTP server project developed and maintained by the Apache software foundation.
An action that enables the auto–uninstall of applications that support silent uninstall from GFI LanGuard.
A GFI LanGuard technology that automatically downloads missing patches and service packs in all 38 languages.
A GFI LanGuard technology that automatically downloads missing Microsoft updates and deploys them over the network.
A GFI LanGuard technology that automatically downloads and deploy missing patches. If an application is blacklisted in GFI LanGuard, auto–remediation will uninstall the application from the target computer during scheduled operations.
An alternative method used to access a computer or computer data over a network.
A text files containing a collection of instructions to be carried out by an operating system or an application.
A list of USBs or Network devices names that are considered as dangerous.
When a USB\Network device name contains a blacklisted entry while scanning a network, GFI LanGuard will report the device as a security threat (High security vulnerability).
An open wireless communication and interfacing protocol that enables exchange of data between devices.
Contains a collection of information about a patch or a Microsoft update. Used in GFI LanGuard to provide more information on an installed patch or update.
Information includes; Bulletin id, title, description, URL and file size.
See Common Gateway Interface
A communication script used by web servers to transfer data to a client internet browser.
A list of standardized names for vulnerabilities and other information security exposures. The aim of CVE is to standardize the names for all publicly known vulnerabilities and security exposures.
See Common Vulnerabilities and Exposures
A graphical representation that indicates the status of various operations that might be currently active, or that are scheduled.
A section of a network that is not part of the internal network and is not directly part of the Internet. Its purpose typically is to act as a gateway between internal networks and the internet.
A GFI LanGuard command line tool, used to deploy Microsoft patches and third party software on target computers.
See Demilitarized Zone
See Domain Name System
A utility that converts domain names into the corresponding IP address and retrieves particular information from the target domain
A database used by TCP/IP networks that enables the translation of hostnames into IP numbers and to provide other domain related information.
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T
ERM
Enumerate computers tool
D
ESCRIPTION
A utility that identifies domains and workgroups on a network.
Enumerate users tools
A tools that enables the scanning of the Active Directory and the retrieval of the list of all users and contacts included in this database:
Extensible Markup
Language
An open text standard used to define data formats. GFI LanGuard uses this standard to import or export scanned saved results and configuration.
File Transfer Protocol
A protocol used to transfer files between computers
FTP
See File Transfer Protocol
GFI EndPointSecurity
A security solution developed by GFI that helps organizations to maintain data integrity by preventing unauthorized access and transfers from removable devices.
GFI LanGuard
ReportPack
GPO
Group Policy Object
A reporting application developed by GFI to generate graphical reports based on results generated by GFI LanGuard.
See Group Policy Object
ICMP pings
IDS impex.exe
An Active Directory centralized management and configuration system that controls what users can and cannot do on a computer network.
See Internet Control Message Protocol
See Intrusion Detection Software
A Command line tool, used to Import and Export profiles and vulnerabilities from GFI LanGuard.
Internet Control
Message Protocol
Internet Information
Services
Linux
A protocol used by network devices to send network related errors.
lnsscmd.exe
Local Host
Mail server
Malware
Microsoft Access database
Microsoft IIS
Microsoft SQL Server
Microsoft Windows service packs
Microsoft WSUS
MS–Access
MS–SQL
NETBIOS
Netscape
A set of Internet–based services created by Microsoft Corporation for internet servers.
An open source operating system that is part of the Unix operating systems family.
A GFI LanGuard command line tool that allows running vulnerability checks against network targets.
In networking, the local host is the computer you are currently using. One can reference to the local host by using the reserved IP address 127.0.0.1 In this manual the Local host is the machine were GFI LanGuard is installed.
The server that manages and stores client's emails
Composed from malicious and software, malware is a general term used for all software developed to harm and damage a computer system. Viruses, worms and Trojans are all type of malware.
A Microsoft desktop relational database management system included in the
Microsoft Office package. Microsoft Access is normally used for small databases.
See Internet Information Services
A Microsoft relational database management system. Microsoft included extra functionality to the SQL Server (transaction control, exception handling and security) so that Microsoft SQL server can support large organizations
A collection of updates and fixes provided by Microsoft to improve an application or an operating system.
An acronym for Microsoft Windows Server Update Services. This service enables administrators to manage the distribution of Microsoft updates to network computers.
See Microsoft Access database
See Microsoft SQL Server
An acronym for Network Basic Input/output. This system provides services to allow applications on different computers within a network to communicate with each other.
A web browser originally developed by Netscape Communications Corporation.
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T
ERM
Open Vulnerability and Assessment
Language
OVAL
Patch agent
Python scripting
Remote Desktop
Protocol
SANS
Scan profiles
D
ESCRIPTION
A standard that promotes open and publicly available security content, and standardizes the transfer of this information across the entire spectrum of security tools and services.
See Open Vulnerability and Assessment Language
A background service that handles the deployment of patches, service packs and software updates on target computers.
A high–level computer programming scripting language.
A protocol developed by Microsoft to enable clients to connect with the user interface of a remote computer.
An acronym for System Administration, Networking and Security research organization. An institute that shares solutions regarding system and security alerts.
A collection of vulnerability checks that determine what vulnerabilities are identified and which information will be retrieved from scanned targets.
Script Debugger
SNMP
SNMP Auditing tool
A tool that reports weak SNMP community strings by performing a dictionary attack using the values stored in its default dictionary
A tool used to probe your network nodes and retrieve SNMP information
SNMP Walk tool
Spyware
SQL Server Audit tool
A tool used to test the password vulnerability of the „sa‟ account (i.e. root administrator), and any other SQL user accounts configured on the SQL Server
SSH Module
A module used to determine the result of vulnerability checks through the console (text) data produced by an executed script. This means that you can create custom Linux/UNIX vulnerability checks using any scripting method that is supported by the target‟s Linux/UNIX OS and which outputs results to the console in text.
TCP ports
A form of malware intended to collect information from a computer without notifying the user.
Acronym for Transmitting Control Protocol. This protocol is developed to allow applications to transmit and receive data over the internet using the well– known computer ports
Terminal Services
A GFI LanGuard module that allows you to write and debug custom scripts using a VBScript–compatible language.
Acronym for Simple Network Management Protocol, a technology used to monitor network devices such as, routers, hubs and switches.
Traceroute tool
Trojans
UDP ports
A service that allows connecting to a target computer and managing its installed applications and stored data.
A tool used to identify the path that GFI LanGuard followed to reach a target computer.
A form of malware that contains a hidden application that will harm a computer.
An acronym for User Datagram Protocol, these used to transfer UDP data between devices. In this protocol received packets are not acknowledged.
Uniform Resource
Locator
Universal Serial Bus
URL
USB
VBScript
Virus
The Uniform Resource Locator is the address of a web page on the world wide web.
A Serial bus standard widely used to connect devices to a host computer
See Uniform Resource Locator
See Universal Serial Bus
A Visual Basic Scripting language is a high–level programming language developed by Microsoft.
A form of malware that infects a computer. The aim of a virus is to harm a computer by corrupting files and applications. A virus is a self–replicating program and can copy itself all over the computer system.
Web server
A server that provides web pages to client browsers using the HTTP protocol.
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T
ERM
White–list
Whois tool
Wi–Fi
Wireless LAN
XML
D
ESCRIPTION
A list of USBs or Network devices names that are not considered as dangerous.
When a USB\Network device name contains a white–listed entry while scanning a network, GFI LanGuard will ignore the device and consider it as a safe source.
A tool that enables you to look up information on a particular domain or IP address
See Wireless LAN
A technology used commonly in local area networks. Network nodes use data transmitted over radio waves instead of cables to communicate with each other.
See Extensible Markup Language
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16 Appendix - Data Processed by GFI LanGuard
16.1 Introduction
When auditing networks, GFI LanGuard enumerates the information described below, from the specified scan target(s).
16.2 System Patching Status
D
ATA
Missing service packs
Missing patches
D
ESCRIPTION
Discovers missing Microsoft and non-Microsoft service packs
Discovers missing Microsoft and non-Microsoft patches
P
ORTS
» TCP 139
»
TCP 445
» DCOM 135
»
DCOM dynamic
»
TCP 139
»
TCP 445
» DCOM 135
»
DCOM dynamic
Installed service packs
Lists installed Microsoft and non-
Microsoft service packs
»
TCP 139
»
TCP 445
»
DCOM 135
»
DCOM dynamic
Installed patches
Lists installed and non-Microsoft
Microsoft patches
»
TCP 139
» TCP 445
»
DCOM 135
» DCOM dynamic
P
ROTOCOL
» SMB
»
File and printer sharing
»
Remote registry
»
Windows update agent
»
SMB
»
File and printer sharing
»
Remote registry
»
Windows update agent
»
SMB
»
File and printer sharing
»
Remote registry
»
Windows update agent
»
SMB
» File and printer sharing
»
Remote registry
»
Windows update agent
16.3 Ports
D
ATA
Open TCP ports
Open UDP ports
D
ESCRIPTION
Checks for open TCP ports
Checks for open UDP ports
P
ORTS
All enabled ports in the scan profile
All enabled ports in the scan profile
P
ROTOCOL
Windows sockets
Windows sockets
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16.4 Hardware
D
ATA
Network devices
D
ESCRIPTION
Lists physical and virtual network adapters
P
ORTS
» TCP 139
»
TCP 445
» DCOM 135
»
DCOM dynamic
Local drives
Processors
Motherboards
Memory details
Storage details
Display adapters
Lists drives discovered on scanned target(s). Local drives include:
»
Hard disks
» CD/DVD drives
»
Floppy drives
Lists processors discovered during a scan
» TCP 139
»
TCP 445
» DCOM 135
»
DCOM dynamic
»
TCP 139
»
TCP 445
»
DCOM 135
»
DCOM dynamic
Lists motherboards discovered during a scan
»
TCP 139
»
TCP 445
»
DCOM 135
»
DCOM dynamic
Returns memory information of scanned target(s), including:
»
Total physical memory
»
Free physical memory
»
Total virtual memory
»
Free virtual memory
Lists every storage device discovered during a scan. Storage devices include:
»
Hard disks
»
Virtual hard disks
»
Removable disks
»
Floppy drives
»
CD/DVD drives
Lists video cards discovered during a scan
»
TCP 139
»
TCP 445
»
DCOM 135
»
DCOM dynamic
»
TCP 139
»
TCP 445
»
DCOM 135
»
DCOM dynamic
» TCP 139
»
TCP 445
» DCOM 135
»
DCOM dynamic
P
ROTOCOL
» SMB
»
File and printer sharing
»
Remote registry
» WMI
» SMB
»
File and printer sharing
»
Remote registry
»
WMI
»
SMB
»
File and printer sharing
»
Remote registry
»
WMI
»
SMB
»
File and printer sharing
»
Remote registry
»
WMI
»
SMB
»
File and printer sharing
» Remote registry
»
WMI
»
SMB
»
File and printer sharing
»
Remote registry
»
WMI
» SMB
»
File and printer sharing
»
Remote registry
»
WMI
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D
ATA
Other devices
D
ESCRIPTION
Lists generic devices discovered during a scan, including:
»
System devices/drivers
» Human Interface Devices
(HID)
»
Mouse and keyboard
»
Communication ports (Serial and Parallel)
»
Floppy disk controllers
»
Hard disk controllers
P
ORTS
» TCP 139
»
TCP 445
» DCOM 135
»
DCOM dynamic
P
ROTOCOL
» SMB
»
File and printer sharing
»
Remote registry
»
WMI
16.5 Software
D
ATA
General applications
D
ESCRIPTION
Enumerates every application installed on the scan target(s)
P
ORTS
»
TCP 139
»
TCP 445
Antispyware applications
Patch management applications
Web browser applications
Firewall applications
Antiphishing applications
VPN client applications
Backup applications
Lists antispyware applications
Lists patch management applications
Lists web browsers
Lists firewall applications
Lists antiphishing applications
Lists VPN client applications
Lists backup applications
»
TCP 139
»
TCP 445
»
TCP 139
» TCP 445
» TCP 139
»
TCP 445
»
TCP 139
»
TCP 445
»
TCP 139
»
TCP 445
»
TCP 139
»
TCP 445
»
TCP 139
»
TCP 445
P
ROTOCOL
»
SMB
»
File and printer sharing
» Remote registry
»
SMB
»
File and printer sharing
»
Remote registry
»
SMB
» File and printer sharing
»
Remote registry
» SMB
»
File and printer sharing
»
Remote registry
»
SMB
»
File and printer sharing
»
Remote registry
»
SMB
»
File and printer sharing
»
Remote registry
»
SMB
»
File and printer sharing
»
Remote registry
»
SMB
»
File and printer sharing
» Remote registry
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16.6 System Information
D
ATA
Shares
Password policy
D
ESCRIPTION
Lists all shares discovered during a scan. Shares information include:
» Share name
»
Share remark
» Share path
»
Share permissions
Lists password policy configuration
P
ORTS
» TCP 139
»
TCP 445
»
TCP 139
» TCP 445
Security audit policy
Security audit policy configuration » TCP 139
»
TCP 445
Registry
NetBIOS names
Computer
Groups
Lists selected information from the system registry. Amongst others, enumerated information includes:
»
Registry owner
»
Current build number
»
Current type
»
Current version
»
Vendor identifier
»
Software type
Lists NetBIOS names of the scanned target(s). This node includes:
»
Workstation service
»
Domain name
»
File server services
»
Browser service elections
Lists computer identifiers including:
»
MAC address
» Time to live
»
Network role
» OS Serial number
»
Language
» Machine type (physical or virtual)
Lists local or domain/workgroup groups
»
TCP 139
»
TCP 445
»
TCP 139
»
TCP 445
»
TCP 139
»
TCP 445
»
TCP 139
» TCP 445
P
ROTOCOL
» SMB
»
File and printer sharing
»
Remote registry
»
SMB
» File and printer sharing
»
Remote registry
» SMB
»
File and printer sharing
»
Remote registry
»
SMB
»
File and printer sharing
»
Remote registry
»
SMB
»
File and printer sharing
»
Remote registry
»
SMB
»
File and printer sharing
»
Remote registry
»
SMB
» File and printer sharing
»
Remote registry
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D
ATA
Users
D
ESCRIPTION
Lists local or domain/workgroup users
P
ORTS
» TCP 139
»
TCP 445
Logged on users
Lists locally and remotely logged on users
»
TCP 139
»
TCP 445
Sessions
Lists the active sessions at the time of the scan
»
TCP 139
»
TCP 445
Services
Processes
Lists every service discovered during a scan
Lists every active process discovered during a scan
»
TCP 139
»
TCP 445
»
TCP 139
»
TCP 445
Remote TOD (time of day)
Lists the current time and uptime of the scanned target(s)
» TCP 139
»
TCP 445
P
ROTOCOL
» SMB
»
File and printer sharing
»
Remote registry
»
SMB
»
File and printer sharing
»
Remote registry
»
SMB
»
File and printer sharing
»
Remote registry
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SMB
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File and printer sharing
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Remote registry
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SMB
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File and printer sharing
» Remote registry
» SMB
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File and printer sharing
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Remote registry
GFI LanGuard Appendix - Data Processed by GFI LanGuard
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181
Index
A
Agent-less audit, 4, 11
Attendant service, 3, 16
Audit result summary, 23
Audit schedule, 6
Auto-remediation, 6, 79
B
Bulletin Info, 28, 125, 126
C
Complete/Combination scans, 77
Custom target properties, 7, 15
CVE, 1, 119, 162, 163, 164, 173
D
deploycmd, 149, 150, 151
Discovery schedule, 6
DNS Lookup, 139, 140, 173
E
Email notifications, 16
Enumerate computers, 139, 143, 144,
174
Enumerate users, 139, 145, 174
H
High security vulnerabilities, 27, 114,
132, 157
I
impex, 149, 151, 152, 164, 174
Import and Export configuration, 97, 98,
99, 100
L
Load scan results, 24
Low security vulnerabilities, 27
GFI LanGuard
M
Management console, 3, 5, 24, 26, 37, 60,
63, 98, 100, 139, 142, 145, 146, 148,
149, 151, 156
Manual audit, 11
Microsoft SQL Server, 4, 89, 148, 174
Missing Patches, 20, 24, 28, 38, 44, 57,
65, 67, 73, 83, 113, 114, 125, 173
Missing service packs, 20, 28, 66, 124
N
NetBIOS, 2, 65, 143, 165
Network & Software Audit, 27, 29, 126
Null session, 13, 53, 68, 70, 73
O
OVAL, 1, 119, 157, 161, 162, 175
P
Potential vulnerabilities, 27, 28
Private key file, 52, 156
Program updates, 93, 95
Proxy settings, 55, 93, 94
Python script, 153, 159, 175
R
Remediation center, 1, 65, 67, 70, 73
Remote desktop connection, 67, 73
Remote Support, 1, 73, 74
S
Save scan results, 25
Scheduled audits, 11
Script Debugger, 3, 154, 175
Security sensors, 1
SMTP Server, 87
SNMP audit, 139, 146
SNMP walk, 139, 147
Index
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183
SQL Server audit, 139, 148, 175
SSH Module, 2, 155, 156
T
Traceroute, 139, 141
U
USB devices, 1, 113, 115, 130, 132
V
VBscript, 2, 153, 155, 175
Vulnerability Assessment, 1, 27, 97, 114,
117, 124, 153, 155
Vulnerability level rating, 24
Vulnerability management strategy, 4
W
Whois, 139, 142, 176
184
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Index GFI LanGuard
USA, CANADA AND CENTRAL AND SOUTH AMERICA
15300 Weston Parkway, Suite 104 Cary, NC 27513, USA
Telephone: +1 (888) 243-4329
Fax: +1 (919) 379-3402 [email protected]
ENGLAND AND IRELAND
Magna House, 18-32 London Road, Staines, Middlesex, TW18 4BP, UK
Telephone: +44 (0) 870 770 5370
Fax: +44 (0) 870 770 5377 [email protected]
EUROPE, MIDDLE EAST AND AFRICA
GFI House, San Andrea Street, San Gwann, SGN 1612, Malta
Telephone: +356 2205 2000
Fax: +356 2138 2419 [email protected]
AUSTRALIA AND NEW ZEALAND
83 King William Road, Unley 5061, South Australia
Telephone: +61 8 8273 3000
Fax: +61 8 8273 3099 [email protected]
Disclaimer
© 2011. GFI Software. All rights reserved. All product and company names herein may be trademarks of their respective owners.
The information and content in this document is provided for informational purposes only and is provided “as is” with no warranty of any kind, either express or implied, including but not limited to the implied warranties of merchantability, fitness for a particular purpose, and non-infringement. GFI Software is not liable for any damages, including any consequential damages, of any kind that may result from the use of this document. The information is obtained from publicly available sources. Though reasonable effort has been made to ensure the accuracy of the data provided, GFI makes no claim, promise or guarantee about the completeness, accuracy, recency or adequacy of information and is not responsible for misprints, out- of-date information, or errors.
GFI makes no warranty, express or implied, and assumes no legal liability or responsibility for the accuracy or completeness of any information contained in this document.
If you believe there are any factual errors in this document, please contact us and we will review your concerns as soon as practical.
GFI LanGuard Index
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185
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