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myUTN
USB Deviceserver
User Manual
Linux
myUTN-2500
Manufacturer & Contact
SEH Computertechnik GmbH
Suedring 11
33647 Bielefeld
Germany
Phone: +49 (0)521 94226-29
Fax: +49 (0)521 94226-99
Support: +49 (0)521 94226-44
Email: [email protected]
Web: https//www.seh-technology.com
Document
Type: User Manual
Title: myUTN User Manual Linux
Version: 4.1 | 2021-07
Legal Information
SEH Computertechnik GmbH has endeavored to ensure that the information in this documentation is correct. If you detect any inaccuracies please inform us at the address indicated above. SEH Computertechnik GmbH will not accept any liability for any error or omission. The information in this manual is subject to change without notifi cation.
The original manual is the German version of this document and shall govern. All non-German versions of this document are translation of the original manual.
All rights are reserved. Copying, other reproduction, or translation without the prior written consent from SEH
Computertechnik GmbH is prohibited.
© 2021 SEH Computertechnik GmbH
All trademarks, registered trademarks, logos and product names are property of their respective owners.
myUTN User Manual Linux
1 General Information........................................................................................ 1
2 Administration Methods................................................................................. 7
3 Network Settings ........................................................................................... 19
4 Device Settings .............................................................................................. 31
5 Working with the SEH UTN Manager ........................................................... 38
6 Security........................................................................................................... 55
7 Maintenance .................................................................................................. 74
myUTN User Manual Linux
8 Appendix........................................................................................................ 79
myUTN User Manual Linux
1 General Information
General Information
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myUTN User Manual Linux
1.1 Product
General Information
Purpose
UTN servers comprise USB Deviceservers and USB Dongleservers. As USB Deviceservers they make non-networkready USB devices (e.g. USB hard disk drives, USB printers, etc.) and as USB Dongleservers non-network-ready USB dongles accessible via TCP/IP network. For this purpose, the USB devices respectively USB dongles will be con nected to the USB ports of the UTN server. Then the UTN (UTN = USB to Network) functionality and the corre sponding software tool 'SEH UTN Manager' establish a virtual USB connection between USB device respectively
USB dongle and client. The USB device respectively USB dongle can be used as if it were connected locally.
Important:
Hereinafter USB dongles and USB devices are referred to as 'USB devices'.
System Requirements
The UTN server has been designed for the use in TCP/IP networks.
The SEH UTN Manager can be used in the following systems:
• Microsoft Windows (32/64-Bit; Windows 10 or higher, Server 2012 R2 or higher)
• macOS 10.9 or higher 1
• Linux (Debian 10, Ubuntu 20.0.4, Red Hat Enterprise Linux 8, Oracle 8, CentOS 8, SUSE Linux Enterprise 15.1, openSUSE Leap 15.1)
2
• IPv4 TCP/IP network
The SEH Product Manager can be used under the following systems:
• Microsoft Windows (32/64-Bit; Windows 10 or higher, Server 2012 R2 or higher)
• macOS 10.12.x or higher
• IPv4 TCP/IP network
Important:
The support of isochronous USB devices (e.g. cameras, microphones, speakers, etc.) depends on
• the operating system:
- Windows
- macOS
- Linux
• the software version:
- firmware/software for UTN servers: 14.5.5 or later
- SEH UTN Manager: 3.1.4 or later
This document describes the usage in Linux environments. Information about the usage in other environments
1. macOS 11.x (Big Sur) only limited USB device support not running on Apple Silicon (Apple M1 chip) based Macs
2. A successful installation cannot be guaranteed due to the variety of Linux systems! The installation must be car ried out under your own responsibility.
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myUTN User Manual Linux
1.2 Documentation
Please load all current documents from our Website: https://www.seh-technology.com/de/service/downloads.html
General Information
Further applicable documents
Thee UTN documentation consists of the following documents:
Quick Installation Guide Print, PDF
User Manual
Online help
Product information
Brochures
Open source licenses
HTML
Print, PDF
Print, PDF online
Information on safety, technical data, instructions for hardware installation and initial setup, and declarations of conformity.
Detailed description of the UTN server configuration and administration. System-specific instructions for the fol lowing systems:
- Windows
- macOS
- Linux
Information on how to use the web interface 'myUTN
Control Center'.
(Embedded into web interface; no download.)
Features and technical data https://www.seh-technology.com
https://www.seh-technology.com/services/licenses.html
Symbols and Legend
A variety of symbols and mark-ups are used within this document.
WARNING
Warning
A warning contains important information that must be heeded. Nonobservance may lead to malfunctions.
Important:
Important information These notes contain crucial information for failure-free operation.
Requirement
• Numeration
1. Numeration
Result
Tip
Bold
Courier
'Proper names'
Requirements that must be met before you can begin the action.
Listing
Step-by-step instructions
Outcome of a performed action
Recommendations and beneficial advice
Reference (Within the document you can use hyperlinks.)
Established terms (e.g. of buttons, menu items, or selection lists)
Code (e.g. for command lines or scripts), Paths
Single quotation marks identify proper names
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myUTN User Manual Linux General Information
1.3 Support and Service
SEH Computertechnik GmbH offers extensive Support. If you have any questions, please contact us.
Monday through Thursday
Friday
8:00 a.m. to 4:45 p.m.
8:00 a.m. to 15:15 p.m.
+49 (0)521 94226-44 [email protected]
Customers from the United States of America (USA) and Canada please contact North American Support:
Monday – Friday 9:00 am – 5:00 pm (EST/EDT)
+1-610-933-2088 [email protected]
All information and downloads regarding your product is available on our website: https://www.seh-technology.com
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myUTN User Manual Linux General Information
1.4 Your Safety
Read and observe all safety regulations and warnings found in the documentation, on the device and on the pack aging. This will avoid potential misuse and prevent damages to people and devices.
Intended Use
The UTN server is used in TCP/IP networks and has been designed for use in office environments. It allows network users to access non-network-ready USB devices.
Improper Use
All uses of the device that do not comply with the functionalities described in the myUTN documentation are re garded as improper uses.
Safety Regulations
Before starting the initial setup of the UTN server, read and observe the safety regulations in the 'Quick Installation
Guide'. This document is enclosed in the packaging in printed form.
Warnings
Read and observe all warnings mentioned in this document. Warnings are found before any instructions known to be dangerous. They are presented as follows:
WARNING
Warning!
Liability and Guarantee
SEH Computertechnik GmbH will not accept any liability for personal injuries, property damages and consequen tial damages resulting from the non-observance of the mentioned safety regulations and warnings. Non-obser vance will also result in any guarantee claims becoming void.Modifications to the Device and Repairs
It is not allowed to make modifications to the hardware and software or to try to repair the device. If your device
needs to be repaired, contact our support 4.
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myUTN User Manual Linux General Information
1.5 First Steps
1. Read and observe the security regulations in order to avoid damages to people and devices
2. Install the hardware. The hardware installation includes connecting the UTN server to the network, USB devic es, and power grid ‘ ‘Quick Installation Guide‘.
3. Install the software. The software installation includes installing the required software tool 'SEH UTN Manager' on your client and assigning an IP address ‘ ‘Quick Installation Guide‘.
4. Configure the UTN server so that it is optimally embedded it into your network and sufficiently protected. All information on how to do this you will find in this document.
5. Use the SEH UTN Manager to establish and manage connections to the USB devices which are connected to the UTN server
You can find information on the UTN documentation in chapter
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myUTN User Manual Linux
2 Administration Methods
You can administer, configure and maintain the UTN server in a number of ways:
• Administration via myUTN Control Center 8
• Administration via the SEH UTN Manager 10
• Administration via Email 17
Administration Methods
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myUTN User Manual Linux Administration Methods
2.1 Administration via myUTN Control Center
The UTN server has a user interface, the myUTN Control Center which can be opened in an Internet browser (e.g.
Mozilla Firefox).
The UTN server can be configured, monitored and maintained via the myUTN Control Center.
• Open myUTN Control Center in Browser 8
• myUTN Open Control Center via SEH UTN Manager 8
Open myUTN Control Center in Browser
The UTN server is connected to the network and the power grid.
The UTN server has a valid IP address 20.
1. Open your browser.
2. Enter the IP address of the UTN server as the URL.
The myUTN Control Center is displayed in the browser.
Important:
If the myUTN Control Center is not displayed, check if a gateway is configured
(
20) and the proxy settings of your browser.
myUTN Open Control Center via SEH UTN Manager
The UTN server is connected to the network and the power grid.
The UTN server has a valid IP address 20.
The SEH UTN Manager is installed on the client
1. Start the SEH UTN Manager.
2. In the selection list, select the UTN server.
3. In the menu bar, select UTN Server – Configure.
Your browser opens and the myUTN Control Center is displayed.
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myUTN User Manual Linux
Controls
1
2
3
Administration Methods
4 5 6
7
2
5
6
3
4
7
Figure 1: myUTN Control Center
1 Menu item
Submenu items
Page
Product & Company
Sitemap
Flags
? icon
After selecting a menu item (simple mouse click), the available submenu items are displayed to the left.
After selecting a submenu item, the corresponding page with its content is displayed.
Menu content
Manufacturer’s contact details and additional product information.
Overview of and direct access to all pages of the myUTN Control Center.
Language selection
Online help
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myUTN User Manual Linux Administration Methods
2.2 Administration via the SEH UTN Manager
The 'SEH UTN Manager' is a software tool developed by SEH Computertechnik GmbH. The SEH UTN Manager is used to establish and manage connections to the USB devices connected to the UTN servers.
Features
The software is installed on all clients that are meant to access a USB device in the network. After the SEH UTN
Manager is started, the network is scanned for connected UTN servers. All UTN servers found and their connected
USB devices are displayed in the 'network list'. To use the USB devices connected to the UTN server, you have to add the UTN server to the 'selection list'. The devices shown in the selection list can be administrated and the con nected USB devices can be used. Working working with the SEH UTN Manager is described in detail in the chapter
’Working with the SEH UTN Manager’ 38.
WARNING
UTN (
2) and the corresponding SEH UTN Manager only work in IPv4 networks.
In IPv6-only networks only the myUTN Control Center ( 8) can be accessed to
administrate the UTN server.
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myUTN User Manual Linux
3
1
2
Administration Methods
5
4
Figure 2: SEH UTN Manager
1
2
3
4
5
Menu bar
Selection List
Buttons for editing the selec tion list
Buttons for managing the port connection
Display area for the proper ties
Available menu items
Shows the selected UTN servers and the connected USB devices.
Opens the dialog for searching UTN servers in the network and for select ing the desired devices
Establishes a connection to the USB device connected to the USB port
( 41) or interrupts the connection (
Shows information on the selected UTN server or USB device
Detailed information on how to use the SEH UTN Manager can be found in the 'SEH UTN Manager Online
Help'. To start the online help, go to the SEH UTN Manager menu bar and select Help – Online Help.
Important:
Some SEH UTN Manager features might not be displayed or are displayed as inac tive. This depends on
• the type and location of the selection list
• the user's rights and the group memberships on the client
• the client operating system
• the settings of the product-specific security mechanisms
• the status of the UTN server and respective USB port
More details can be found in chapter
’SEH UTN Manager – Feature Overview’ 104.
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myUTN User Manual Linux Administration Methods
Versions
The SEH UTN Manager is available in two versions:
• Complete Version:
SEH UTN Manager with graphical user interface ( Figure 2 11) and additional features.
• Minimal version (without graphical user interface):
Usage only via command line ('utnm'
Important:
The complete version is recommended for general use.
The minimal version is to be used by experts only!
In both versions the 'SEH UTN Service' (Daemon) works in the background and is automatically active after the system start.
Additionally, the following user groups are distinguished:
• users with administrative rights (administrator)
• users without administrative rights (standard user)
Important:
Some features can only be configured by administrators. More details can be
found in chapter ’SEH UTN Manager – Feature Overview’ 104.
Installation
In order to use the SEH UTN Manager, the program must be installed on a computer with a Linux operating sys tem. The SEH UTN Manager installation file can be found on the SEH Computertechnik GmbH website: https://www.seh-technology.com/services/downloads.html
The following installation packages are available for Linux systems (64-bit):
• *.deb (for 64-bit Debian-based systems)
• *.rpm (for 64 bit Red Hat-based systems)
WARNING
A successful installation cannot be guaranteed due to the multitude of Linux varieties!
The installation must be carried out on your own.
SEH Computertechnik GmbH provides installation support upon request for a fee
The installation was successfully tested in the following 64-bit systems:
• Debian: Debian10, Ubuntu 20.0.4
• Red Hat: Red Hat Enterprise Linux 8, Oracle 8, CentOS 8, openSUSE Leap 15.1
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myUTN User Manual Linux Administration Methods
Installation requirements
deb: Linux kernel 2.6.32 or later, glibc 2.15 or later, DKMS (Dynamic Kernel Module Support)
rpm: Linux kernel 2.6.32 or later, glibc 2.12 or later, DKMS (Dynamic Kernel Module Support)
There are four installation packages:
1) driver
2) service (SEH UTN service/daemon)
3) clitool (command line interface tool 'utnm')
4) manager (graphical user interface)
The number of installed packages determines the version of the SEH UTN Manager: package 1)-3): minimal version package 1)–4): complete version
Important:
Install the packages in the order given above to comply with their dependencies.
The installation of the files depends on the distribution. For more information, refer to the documentation of your operating system.
Important:
Installation must only be carried out by experienced users.
Some installation examples are given below.
• ’Installing the SEH UTN Manager in Ubuntu 20.0.4.x LTS (64-Bit) via Software Management’ 14
• ’Installing the SEH UTN Manager in Ubuntu 20.0.4.x LTS (64-Bit) via Terminal’ 15
• ’Installing the SEH UTN Manager in Red Hat Enterprise Linux Server (7.4)’ 16
Important:
Knowledge Base articles with further installation information for Linux (e.g. instal lation of DKMS and the UEFI Secure Boot problem) are available at the SEH Com putertechnik GmbH website: https://www.seh-technology.com/services/knowledgebase.html
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myUTN User Manual Linux Administration Methods
Installing the SEH UTN Manager in Ubuntu 20.0.4.x LTS (64-Bit) via Software Management
Linux kernel 2.6.32 or later
glibc 2.15 or later
OpenSSL 1.0.1 or later
DKMS (Dynamic Kernel Module Support) is installed on the client.
The user used can gain root privileges via the command sudo .
1. Start installation package no. 1.
The Ubuntu Software appears.
2. Click Install.
A password prompt appears.
3. Authenticate yourself with your password.
The package will be installed on your client.
4. Repeat steps 1 through 3 with the remaining packages.
5. The user from the account used for installation can automatically use the SEH UTN Manager on the client. If further users are to use the SEH UTN Manager, you must add them to the group 'utnusers'. To do this, open a
Terminal and enter the command: sudo usermod -aG utnusers <user name>
6. Logout and login again so that the group changes take effect.
The SEH UTN Manager is installed on your client. Check the installation by starting the SEH UTN Manager (
can be found in chapter ’Working with the SEH UTN Manager’ 38.
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myUTN User Manual Linux Administration Methods
Installing the SEH UTN Manager in Ubuntu 20.0.4.x LTS (64-Bit) via Terminal
Linux kernel 2.6.32 or later
glibc 2.15 or later
OpenSSL 1.0.1 or later
DKMS (Dynamic Kernel Module Support) is installed on the client.
The user used can gain root privileges via the command sudo .
1. Open a Terminal.
2. Install the headers for your kernel: sudo apt-get install linux-headers-`uname -r`
3. Verify, that the version numbers of kernel and headers match exactly:
Kernel: uname -r
Header: sudo apt list --installed | grep linux-headers
WARNING
The version numbers must be identical. Otherwise, the SEH UTN Manager pack ages cannot be installed correctly.
If kernel and headers do not match, you must create a match on your own.
4. Change to the directory containing the SEH UTN Manager packages: cd <dirctory>
5. Install the desired SEH UTN Manager packages: sudo dpkg -i <full package name>
6. The user from the account used for installation can automatically use the SEH UTN Manager on the client. If further users are to use the SEH UTN Manager, you must add them to the group 'utnusers': sudo usermod -aG utnusers <user name>
7. Logout and login again so that the group changes take effect.
The SEH UTN Manager is installed on your client. Check the installation by starting the SEH UTN Manager (
can be found in chapter ’Working with the SEH UTN Manager’ 38.
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myUTN User Manual Linux Administration Methods
Installing the SEH UTN Manager in Red Hat Enterprise Linux Server (7.4)
Linux kernel 2.6.32 or later
glibc 2.12 or later
OpenSSL 1.0.1 or later
DKMS (Dynamic Kernel Module Support) is installed on the client.
The user used can gain root privileges via the command sudo .
1. Open a Terminal.
2. Install the headers for your kernel: sudo yum install kernel-devel-`uname -r`
3. Verify, that the version numbers of kernel and headers match exactly:
Kernel: uname -r
Header: sudo yum list | grep kernel-headers
WARNING
The version numbers must be identical. Otherwise, the SEH UTN Manager pack ages cannot be installed.
If kernel and headers do not match, you must create a match on your own.
4. Change to the directory containing the SEH UTN Manager packages: cd <dirctory>
5. Install the desired SEH UTN Manager packages: sudo yum install <full package name>
6. The user from the account used for installation can automatically use the SEH UTN Manager on the client. If further users are to use the SEH UTN Manager, you must add them to the group 'utnusers': sudo usermod -aG utnusers <user name>
7. Logout and login again so that the group changes take effect.
The SEH UTN Manager is installed on your client. Check the installation by starting the SEH UTN Manager (
can be found in chapter ’Defining Search Parameters’ 39.
Program Start
To start the SEH UTN Manager, go to the launcher and call 'UTN Manager' via Dash (search) or go to Terminal an run the command utnmanager .
Update
You can check for program updated manually and automatically. More information can be found in the 'SEH
UTN Manager Online Help'.
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myUTN User Manual Linux
Commands
<Command>
[<Comment>] update utn help
Administration Methods
2.3 Administration via Email
You can administrate the UTN server via email and thus from any computer Internet access (remote access):
• Get UTN server status
• Set UTN server parameters
• UTN server update
To do so, you write commands into the email message header
Table 1: Commands and comment:
Option get status get parameters set parameters
Description
You get the UTN server status page.
You get the UTN server parameter list.
Sends one or more parameters to the UTN server which will then be adopted by the UTN server.
Write the parameters and their values into the email message body: <parameter> = <value>
The syntax and values can be found in the parameter lists 84.
Carries out an automatic update using the software that is attached to the mail.
You get a page with information on remote maintenance.
Freely definable text for descriptions.
The following applies to the instructions:
• not case-sensitive
• one or more space characters are allowed
• max. length is 128 byte
• only the ASCII format can be read.
In addition, a TAN is needed to execute updates or parameter changes. To begin with, you have to get a status page via email (
Table 1 17) because it contains the TAN. You enter the received TAN into the email message
body. A space character must follow.
A DNS server is configured on the UTN server 24.
In order to receive emails, the UTN server must be set up as user with its own email address on a POP3 server.
POP3 and SMTP parameters have been configured on the UTN server
1. Open an email program.
2. Write a new email:
- As recipient enter the UTN server address.
- Into the subject line enter an instruction. cmd: <command> [<comment>]
Commands and comment:
- Into the email message body enter a TAN, if applicable.
3. Send the email.
The UTN server receives the email and carries out the instruction.
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myUTN User Manual Linux
Examples
You want to get the UTN server parameter list:
Subject: cmd: get parameters
You want to set the 'configuration' parameter:
Subject: cmd: set parameters
Email message body: TAN = nUn47ir79Ajs7QKE sys_descr = <Your description>
Administration Methods
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myUTN User Manual Linux Network Settings
3 Network Settings
To optimally embed your UTN server into your network, you can configure the following settings:
• How to Configure IPv4 Parameters 20
• How to Configure IPv6 Parameters 22
• How to Configure the DNS 24
• How to Configure SNMP 25
• How to Configure Bonjour 26
• How to Configure Email (POP3 and SMTP) 27
• How to Use the UTN Server in VLAN Environments 29
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myUTN User Manual Linux Network Settings
3.1 How to Configure IPv4 Parameters
In the hardware installation ( ‘Hardware Installation Guide‘) the UTN server is connected to the network. The
UTN server then checks if it gets IP address dynamically via the boot protocols BOOTP (Bootstrap Protocol) or
DHCP (Dynamic Host Configuration Protocol). If this is not the case, the INU server assigns itself an IP address via
Zeroconf from the address range which is reserved for Zeroconf (169.254.0.0/16).
Important:
If the UTN server is connected to an IPv6 network, it will automatically receive an
additional IPv6 address 22.
The IPv4 address assigned to the UTNs erver can be found via the software tool 'SEH UTN Manager'. This step usu ally is carried out during the initial set up ( ‘Quick Installation Guide‘).
To optimally embed the UTN server into a TCP/IP network, you can configure different IPv4 parameters and/or manually assign a static IP address to the UTN server.
• Configuring IPv4 Parameters via the myUTN Control Center 20
• Configuring IPv4 Parameters via SEH UTN Manager 21
• Determining the IPv4 Address via SEH UTN Manager and Configuring IPv4 Parameters 21
Configuring IPv4 Parameters via the myUTN Control Center
1. Start the myUTN Control Center.
2. Select NETWORK – IPv4.
3. Configure the IPv4 parameters;
4. Click Save & Restart to confirm.
The settings will be saved.
Table 2: IPv4 parameters
Parameters
DHCP
BOOTP
ARP/PING
Description
Enables or disables the protocols DHCP, BOOTP, and ARP/PING.
The IP address assignment via DHCP and BOOTP is automatic if one of these protocols is implemented in your network.
You can use the commands ARP and PING to change an IP address which was assigned via Zeroconf. The implementation depends on your system; read the documentation of your operating system.
IP address
Subnet mask
Gateway
We recommend disabling these options once an IP address has been assigned to the UTN server.
IP address of the UTN server.
Subnet mask of the UTN server.
Subnet masks are used to logically partition big networks into subnetworks. If you are using the UTN server in a subnetwork, it requires the subnet mask of the subnetwork.
IP address of the network's standard gateway which the UTN server uses.
With a gateway, you can address IP addresses from other networks.
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myUTN User Manual Linux Network Settings
Configuring IPv4 Parameters via SEH UTN Manager
The SEH UTN Manager (complete version) is installed on the client 10.
The UTN server is shown in the selection list 39.
1. Start the SEH UTN Manager.
2. In the selection list, select the UTN server.
3. In the menu bar, select UTN Server–Set IP Address.
The Set IP Address dialog appears.
4. Enter the relevant TCP/IP parameters.
5. Click OK.
The settings will be saved.
Determining the IPv4 Address via SEH UTN Manager and Configuring IPv4 Parameters
The SEH UTN Manager searches the network for connected INU servers.
The SEH UTN Manager (complete version) is installed on the client 10.
1. Start the SEH UTN Manager.
2. Confirm the note dialog Your Selection List seems to be empty with Yes.
If no note dialog is available and the main dialog appears, select Selection List–Edit in the menu bar.
The Edit Selection List dialog appears.
3. In the network list, select the INU server.
If you are using several UTN servers of the same model, you can identify a specific de -
vice by its default name ( 80) or the connected USB devices.
4. In the shortcut menu, select Set IP Address.
The Set IP Address dialog appears.
5. Enter the relevant TCP/IP parameters.
6. Click OK.
The settings will be saved.
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myUTN User Manual Linux Network Settings
3.2 How to Configure IPv6 Parameters
IPv6 (Internet Protocol Version 6) is the successor of the still predominantly used IPv4 (Internet Protocol Version
4). IPv6 offers the same basic functions but has many advantages such as the increased address space of 2
128
(IPv6) instead of 2
32
(IPv4) IP addresses and auto configuration.
Important:
IPv6 address notation differs from IPv4: An IPv6 address consists of 128 bits. The normal format of an IPv6 address is eight fields. Each field contains four hexadeci mal digits representing 16 bits.
Example: 2001:db8:4:0:2c0:ebff:fe0f:3b6b
As a URL in a Web browser, an IPv6 address must be enclosed in square brackets.
This prevents port numbers from being mistakenly regarded as part of an IPv6 address.
Example: http://[2001:db8:4:0:2c0:ebff:fe0f:3b6b]:443
The URL will only be accepted by browsers that support IPv6.
You can embed the UTN server into an IPv6 network.
WARNING
UTN ( 2) and the corresponding SEH UTN Manager only work in IPv4 networks.
In IPv6-only networks only the myUTN Control Center ( 8) can be accessed to
administrate the UTN server.
The UTN server will automatically receive one or more IPv6 addresses in addition to its IPv4 address. To optimally embed the UTN into your network, you can configure IPv6 parameters.
1. Start the myUTN Control Center.
2. Select NETWORK – IPv6.
3. Configure the IPv6 parameters;
4. Click Save & Restart to confirm.
The settings will be saved.
Table 3: IPv6 parameters
Parameters
IPv6
Automatic configuration
IPv6 address
Router
Description
Enables/disables the IPv6 functionality of the UTN server.
Enables/disables the automatic assignment of the IPv6 address to the UTN server.
Defines an IPv6 unicast address in the format n:n:n:n:n:n:n:n which is manually assigned to the UTN server.
• Every 'n' represents the hexadecimal value of one of the eight 16 bit ele ments of the address.
• Leading zeros can be omitted.
• An IPv6 address may be entered or displayed using a shortened version when successive fields contain all zeros (0). In this case, two colons (::) are used.
Manually defines a static router to which the UTN server sends its requests.
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myUTN User Manual Linux
Parameters
Prefix length
Network Settings
Description
Defines the length of the subnet prefix for the IPv6 address. The value 64 is pre set.
Address ranges (e.g. your network) are specified with prefixes. To do this, the prefix length (number of bits used) is added to the IPv6 address as a decimal number and the decimal number is preceded by '/'.
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myUTN User Manual Linux Network Settings
3.3 How to Configure the DNS
DNS is a service to translate domain names into IP addresses and vice versa. Enable DNS so that you can enter host names instead of IP addresses when you define servers.
Example: Time server configuration (
ntp.server.de
instead of 10.168.0.140
.
Important:
If your network in configured accordingly, the UTN server receives the DNS settings automatically via DHCP. A DNS server assigned in such a manner always takes pre cedence over manual settings.
Your network has a DNS server.
1. Start the myUTN Control Center.
2. Select NETWORK – DNS.
3. Configure the DNS parameters;
4. To confirm, click Save .
The settings will be saved.
Table 4: DNS parameters
Parameters
DNS
Primary DNS server
Secondary DNS server
Domain name (suffix)
Description
Enables/disables the name resolution via a DNS server.
Defines the IP address of the primary DNS server.
Defines the IP address of the secondary DNS server.
The secondary DNS server is used if the first one is not available.
Defines the domain name of an existing DNS server.
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myUTN User Manual Linux Network Settings
3.4 How to Configure SNMP
SNMP (Simple Network Management Protocol) is protocol for configuring and monitoring network elements. The protocol controls communication between the monitored devices and the monitoring station (SNMP manage ment tool). Information can be read and changed.
SNMP exists in 3 versions, the UTN supports version 1 and 2.
SNMPv1
SNMPv1 is the first and most simple SNMP version. A disadvantage is the insecure access control which is the com munity: a community groups monitoring station and monitored devices. This makes their administration easier.
There are two types of communities, read-only and read/write. For both the community name is also the pass word used between the monitoring station and the monitored devices. As it is transmitted as clear text, it does not offer sufficient protection.
SNMPv3
SNMPv3 is the newest SNMP version. It contains enhancements and a new security concept which includes, amongst other thins, encryption and authentication. Therefore, a SNMP user with name and password must be created in the monitoring station. This user must then be specified in the UTN server.
Important:
The user accounts are also used to access the myUTN Control Center and thus are
SNMPv3 users are created in the monitoring station. (Only for SNMPv3.)
1. Start the myUTN Control Center.
2. Select NETWORK – SNMP.
3. Configure the SNMP parameters;
4. To confirm, click Save.
The settings will be saved.
Table 5: SNMP Parameters
Parameters
SNMPv1
Read-only
Community
Description
Enables/disables SNMPv1.
Enables/disables the write protection for the community.
SNMP community name Enter the name as it is defined in the monitoring sta tion.
Important:
The default name is 'public'. This name is commonly used for read/ write communities. We recommend to change it as soon as possi ble to increase security.
SNMPv3
Hash
Access rights
Encryption
Enables/disables SNMPv3.
Defines the hash algorithm.
Defines the access rights of the SNMP user.
Defines the encryption method.
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3.5 How to Configure Bonjour
Bonjour is a technology which automatically detects devices and services in TCP/IP networks.
The UTN server uses Bonjour to
• verify IP addresses
• announce and find network services
• match host names and IP addresses
1. Start the myUTN Control Center.
2. Select NETWORK – Bonjour.
3. Configure the Bonjour parameters;
4. To confirm, click Save.
The settings will be saved.
Table 6: Bonjour parameters
Parameters
Bonjour
Bonjour name
Description
Enables/disables Bonjour.
Defines the Bonjour name of the UTN server.
The UTN server uses this name to announce its Bonjour services. If no Bonjour name is entered, a default name will be used (device name@ICxxxxxx).
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3.6 How to Configure Email (POP3 and SMTP)
The UTN server can be administered via email (
17) and offers a notification service ( 37) which sends you
status and error messages via email. To use these features, the email protocols 'POP3' and 'SMTP' must be set up on the UTN server.
A client, e.g. the UTN server, uses POP3 (Post Office Protocol Version 3) to fetch emails from a mail server. POP3 must be set up on the UTN server so that it can be administered via email.
SMTP (Simple Mail Transfer Protocol) is used to send and forward emails. The UTN server needs SMTP for the ad ministration via email and the notification service.
Configuring POP3
An email user account for the UTN server is set up on the POP3 server.
1. Start the myUTN Control Center.
2. Select NETWORK – Email.
3. Configure the POP3 parameters; Table 7 27.
4. To confirm, click Save.
The settings will be saved.
Table 7: POP3 parameters
Parameters
POP3
POP3 – Server name
POP3 – Server port
POP3 – Security
POP3 – Check mail every
POP3 – Ignore mail exceed ing
POP3 – User name
POP3 – Password
-
Description
Enables/disables the POP3 functionality.
Defines the POP3 server via its IP address or host name.
A host name can only be used if a DNS server was configured beforehand.
Defines the port which the UTN server uses to receive emails.
The default port number for POP3 is 110. The default port number for SSL/TLS
(parameter ’POP3 – Security’ 27) is 995. If required, read the documentation
of your POP3 server.
Defines the authentication method to be used:
• APOP: encrypts the password when logging on to the POP3 server.
• SSL/TLS: encrypts the entire communication with the POP3 server. The en -
cryption strength is defined via the encryption protocol and level 59.
Defines the time interval (in minutes) which with the POP3 server is checked for emails.
Defines the maximum email size (in Kbyte) to be accepted by the UTN server.
(0 = unlimited)
Defines the user name used by the UTN server to log on to the POP3 server.
Defines the user password used by the UTN server to log on to the POP3 server.
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Configuring SMTP
An email user account for the UTN server is set up on the SMTP server.
1. Start the myUTN Control Center.
2. Select NETWORK – Email.
3. Configure the SMTP parameters; Table 8 28.
4. To confirm, click Save.
The settings will be saved.
Table 8: SMTP Parameters
Parameters
SMTP - Server name
SMTP – Server port
SMTP – SSL/TLS
SMTP – Sender name
SMTP – Login
SMTP – User name
SMTP – Password
SMTP – Security (S/MIME)
SMTP – Signing emails
SMTP – Full encryption
SMTP – Attach public key
Description
Defines the SMTP server via the IP address or the host name.
A host name can only be used if a DNS server was configured beforehand.
Defines the port which the UTN server and SMTP server use to communicate.
The default port number for SMTP is 25. For SSL/TLS (parameter ’SMTP – SSL/
TLS’ 28), SMTP servers use by default port 587 (STARTSSL/STARTTLS) or the
old port 465 (SMTPS). If required, read the documentation of your SMTP server.
Enables/disables SSL/TLS.
SSL/TLS encrypts the communication from the UTN to the SMTP server. The encryption strength is defined via the encryption protocol and level
Defines the email address used by the UTN server to send emails.
Very often the name of the sender and the email account user name are identi cal.
Enables/disables SNMP authentication. To send emails, the UTN sends its user name and password to the SMTP server to authenticate itself. Enter user name
(parameter ’SMTP – User name’ 28) and password (parameter ’SMTP – Pass word’ 28).
Some SMTP servers require SMTP authentication to prevent fraudulent use
(spam).
Defines the user name used by the UTN server to log on to the SMTP server.
Defines the password used by the UTN server to log on to the SMTP server.
Enables/disables the email security standard S/MIME (Secure/Multipurpose
Internet Mail Extensions). S/MIME is used to sign (’SMTP – Signing emails’
28) or encrypt (’SMTP – Full encryption’ 28) emails.Enable the desired fea
-
tures (if desired with ’SMTP – Attach public key’ 28).
Enables the signing of emails. The recipient can use the signature to check the sender's identity. This proves, that the email has not been altered.
An S/MIME certificate is required for the signing of emails 66.
Enables the encryption of emails. Only the intended recipient can open and read the encrypted email.
An S/MIME certificate is required for the encryption
Sends the public key together with the email.
Many email clients require the key to display the email.
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3.7 How to Use the UTN Server in VLAN Environments
The UTN server supports VLAN (Virtual Local Area Network) according to 802.1Q.
A VLAN divides a physical network into logical subnetworks. Each subnetwork is its own broadcast domain, so data packets cannot be exchanged between subnetworks. VLANs are used to structure networks and, above all, to secure them.
Each USB device can be assigned to a VLAN. To transfer VLAN data via the USB ports, you must first enter the
VLANs on the UTN server. After this, the USB ports used for forwarding data must be linked to the specified VLANs.
The access to USB devices can be regulated particularly well with VLAN: a defined group of network users may use certain USB devices.
Inform yourself on how to implement VLAN in your environment and then set up the
UTN server for it.
• Define a IPv4 Management VLAN 29
• Define a IPv4 Client VLAN 30
• Allocating a IPv4 Client VLAN to a USB Port 30
Define a IPv4 Management VLAN
1. Start the myUTN Control Center.
2. Select NETWORK – IPv4 VLAN.
3. Configure the IPv4 VLAN parameters; Table 9 29.
4. To confirm, click Save.
5. The settings will be saved.
Table 9: IPv4 management VLAN parameters
Parameters
IPv4 management VLAN
VLAN ID
IP address
Subnet mask
Gateway
Access from any VLAN
Access via LAN (untagged)
Description
Enables/disables the forwarding of IPv4 management VLAN data.
If this option is enabled, SNMP is only available in the IPv4 management VLAN.
ID for the identification of the IPv4 management VLAN (0–4096).
IP address of the UTN server 20.
Subnet mask of the UTN server
IP address of the network's standard gateway which the UTN server uses
With a gateway, you can address IP addresses from other networks.
Enables/disables the administrative access (web) to the UTN server via IPv4 cli ent VLANs.
If this option is enabled, the UTN server can be administrated via all VLANs.
Enables/disables the administrative access to the UTN server via IPv4 packets without tag.
If this option is disabled, the UTN server can only be administrated via VLANs.
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Define a IPv4 Client VLAN
1. Start the myUTN Control Center.
2. Select NETWORK – IPv4 VLAN.
3. Configure the IPv4 VLAN parameters; Table 10 30.
4. To confirm, click Save.
The settings will be saved.
Table 10: IPv4 client VLAN parameters
Parameters
VLAN
IP address
Subnet mask
Gateway
VLAN ID
Description
Enables/disables the forwarding of IPv4 client VLAN data.
IP address of the UTN server within the IPv4 client VLAN.
Subnet mask of the UTN server within the IPv4 client VLAN.
Gateway address of the IPv4 client VLAN.
ID for the identification of the IPv4 client VLAN (0–4096).
Network Settings
Use Auto-fill to automatically fill VLAN , IP address and Subnetmask with the val ues from line 1. VLAN ID will automatically be counted up by '1'.
Allocating a IPv4 Client VLAN to a USB Port
1. Start the myUTN Control Center.
2. Select SECURITY – USB port access.
3. Allocate a VLAN to the USB port via the Allocate VLAN list.
4. To confirm, click Save.
The settings will be saved.
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4 Device Settings
• How to Configure the Device Time 32
• How to Assign a Description 33
• How to Assign a Name to a USB Port 34
• How to Disable a USB Port 35
• How to Configure the UTN (SSL) Port 36
Device Settings
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4.1 How to Configure the Device Time
The device time of the UTN server can be set via an SNTP time server (Simple Network Time Protocol) in the net work. A time server synchronizes the time of devices within a network.
Today's primary time standard 'UTC' (Universal Time Coordinated) is used. The time zone compensates for loca tion.
Important:
If your network in configured accordingly, the UTN server receives the time server settings automatically via DHCP. A time server assigned in such a manner always takes precedence over a manually set time server.
The network has a time server.
1. Start the myUTN Control Center.
2. Select DEVICE – Date/Time.
3. Tick Date/Time.
4. Into the Time server box, enter the IP address or the host name of the time server.
(The host name can only be used if a DNS server was configured beforehand 24 .)
5. From the Time zone list, select the code for your local time zone.
6. To confirm, click Save.
The settings will be saved.
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4.2 How to Assign a Description
You can assign freely definable descriptions to the UTN server. This gives you a better overview of the devices in the network.
You can also assign names to USB ports to distinguish them 34.
1. Start the myUTN Control Center.
2. Select DEVICE – Description.
3. Enter freely definable names for Host name, Description, and Contact person.
4. To confirm, click Save.
The settings will be saved.
Table 11: Description
Parameters
Host name
Description
Contact person
Description
Device name as alternative to IP address. With a name you can identify the UTN server more easily in the network, e.g. if you are using several UTN servers.
Is displayed in the myUTN Control Center and SEH UTN Manager.
Device description, e.g. location or department.
Is displayed in the myUTN Control Center and SEH UTN Manager.
Contact person, e.g. device administrator.
Is displayed in the myUTN Control Center.
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4.3 How to Assign a Name to a USB Port
By default, the names of the connected USB devices are displayed on the USB ports in the myUTN Control Center and SEH UTN Manager. These names are specified by the device manufacturers and might be ambiguous or inac curate.
That is why you can assign freely definable names to the USB ports, e.g. the name of a corresponding software.
This gives you a better overview of the USB devices available in the network.
1. Start the myUTN Control Center.
2. Select Device – USB port.
3. Enter the preferred name into the Port name field.
4. To confirm, click Save.
The settings will be saved.
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4.4 How to Disable a USB Port
By default all USB ports are active. You can deactivate (and re-activate ) the USB port by interrupting respectively re-establishing the power supply.
Deactivate
• unused USB ports to ensure that unwanted USB devices cannot be connected to the network. (Deactivated
USB ports cannot be seen in the SEH UTN Manager.)
• a USB port and re-activate it to restart the connected USB device if it is in an undefinable condition. (The USB device does not need to be removed and reconnected manually.)
1. Start the myUTN Control Center.
2. Select Device – USB port.
3. Tick/clear the option in front of the USB port.
4. To confirm, click Save.
The USB port is disabled/enabled.
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4.5 How to Configure the UTN (SSL) Port
A shared port is used for the data transfer between the UTN server (including connected USB devices) and the cli ent. It depends on the connection type:
• unencrypted USB connection: UTN port (default = 9200)
• encrypted USB connection (
56): UTN SSL port (default = 9443)
WARNING
The UTN port respectively UTN SSL port must not be blocked by security measures
(firewall).
You can change the port number, e.g. if the port number is already used for another application in your network.
The change is made on the UTN server and is relayed to the SEH UTN Manager installed on the clients via SNMPv1.
1. Start the myUTN Control Center.
2. Select Device – UTN port.
3. Enter the port number into the UTN port or UTN SSL port box.
4. To confirm, click Save.
The settings will be saved.
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4.6 How to Get Messages
The UTN server can send you different messages:
• Status email: Periodically sent email containing the status of the UTN server and of the connected USB devic es.
• Event notification via email or SNMP trap:
- USB device is connected to the UTNserver / disconnected from the UTN server
- USB port (i.e. connection to the connected USB device) is activated/deactivated
- UTN server restart
• Configuring the sending of status emails 37
• Configuring event notifications via email 37
• Configuring event notifications via SNMP traps 37
Configuring the sending of status emails
The status email can be sent to up to two recipients.
DNS is set up
1. Start the myUTN Control Center.
2. Select DEVICE – Notification.
3. Enter the recipient into the Email address box.
4. Tick the desired recipient(s) in the Status email area.
5. Define the interval.
6. To confirm, click Save.
The settings will be saved.
Configuring event notifications via email
The event emails can be sent to up to two recipients.
DNS is set up
1. Start the myUTN Control Center.
2. Select DEVICE – Notification.
3. Enter the recipient into the Email address box.
4. Tick the options with the desired message types.
5. To confirm, click Save.
The settings will be saved.
Configuring event notifications via SNMP traps
The event SNMP traps can be sent to up to two recipients.
SNMPv1 or/and SNMPv3 is set up
1. Start the myUTN Control Center.
2. Select DEVICE – Notification.
3. In the SNMP traps area, define the recipients via the IP address and the community.
4. Tick the options with the desired message types.
5. To confirm, click Save.
The settings will be saved.
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5 Working with the SEH UTN Manager
The 'SEH UTN Manager' is a software tool developed by SEH Computertechnik GmbH. The SEH UTN Manager is used to establish and manage connections to the USB devices connected to the UTN servers.
• How to Find UTN Servers/USB Devices in the Network 39
• How to Establish a Connection to a USB Device 41
• How to Cut the Connection between the USB Device and the Client 42
• How to Request an Occupied USB Device 43
• How to Automate USB Device Connections and Program Starts 44
• How to Find Status Information on USB Ports and USB Devices 46
• How to Use the Selection List and Manage User Access Rights with It 47
• How to Use the SEH UTN Manager without Graphical User Interface (utnm) 50
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5.1 How to Find UTN Servers/USB Devices in the Network
The software tool SEH UTN Manager is used to establish and manage connections to the USB devices connected to the UTN servers.
After the SEH UTN Manager is started, the network has to be scanned for connected UTN servers. The network range to be scanned is freely definable; the search can be effected via multicast and/or in definable IP ranges. The default setting is multicast search in the local network segment.
All UTN servers found and their connected USB devices are displayed in the 'network list'. To use the USB devices connected to the UTN server, you have to add the UTN server to the 'selection list'.
You can also directly add an UTN server to the selection list. To do this, you need to know its IP address.
• Defining Search Parameters 39
• Adding the UTN Server to the Selection List 39
• Adding a UTN Server via IP Address 40
Defining Search Parameters
The SEH UTN Manager (complete version) is installed on the client 10.
1. Start the SEH UTN Manager.
2. In the menu bar, select Program–Options.
The Options dialog appears.
3. Select the Network Scan tab.
4. Tick IP Range Search and define one or more network ranges.
5. Click OK.
The settings will be saved.
Scanning the Network
The SEH UTN Manager (complete version) is installed on the client 10.
1. Start the SEH UTN Manager.
2. In the menu bar, select Selection List – Edit.
The Edit Selection List dialog appears.
3. Click Scan.
4. The network is scanned. The UTN servers and USB devices found are displayed in the network list.
Adding the UTN Server to the Selection List
The SEH UTN Manager (complete version) is installed on the client 10.
The UTN server was found via the network scan and is displayed in the network list.
1. Start the SEH UTN Manager.
2. In the menu bar, select Selection List – Edit.
The Edit Selection List dialog appears.
3. In the network list, select the UTN server to be used.
4. Click Add.
(Repeat steps 2 and 3, if necessary.)
5. Click OK.
The UTN servers and the connected USB devices are shown in the selection list.
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Figure 5: SEH UTN Manager – Edit Selection List
Adding a UTN Server via IP Address
The SEH UTN Manager (complete version) is installed on the client 10.
You know the IP address of the UTN server.
1. Start the SEH UTN Manager.
2. Select UTN server – Add.
The Add server dialog appears.
3. In the Host name or IP address box, enter the IP address of the UTN server.
4. If you changed the UTN port or UTN SSL port (
36), define the respective port numbers in the UTN-Port
and UTN-SSL-Port box.
5. Click OK.
The UTN server and the connected USB devices is shown in the selection list.
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5.2 How to Establish a Connection to a USB Device
To connect a USB device to the client, a point-to-point-connection is established between the client and the USB port of the UTN server to which the USB device is connected. The USB device can then be used as if it were directly connected to the client.
Important:
Special case of compound USB devices
When connecting certain USB devices to a USB port of the UTN server, the selection list displays several USB devices on this port. These are compound USB devices. They con sist of a hub and one or more USB devices that are all integrated into a single housing.
If the connection is established to a port with a connected compound USB device, all
USB devices shown will be connected to the user's client. In this case, each integrated
USB device occupies a virtual USB port of the UTN server.The number of these virtual
USB ports is limited depending on the UTN server model. If the limit is reached, no fur ther USB devices can be used on this UTN server.
UTN server Number of virtual USB ports myUTN-2500 12
The SEH UTN Manager (complete version) is installed on the client 10.
The USB port is shown in the selection list
All provisions (driver installation, etc.) necessary to operate the USB device locally (i.e. connected directly to the client) have been met on the client. Ideally, the USB device has been connected and operated on the client locally according to the instructions of the manufacturer.
The USB port is not connected to another client.
1. Start the SEH UTN Manager.
2. In the selection list, select the port.
3. In the menu bar, select Port – Activate.
The connection between the USB device and client is established.
Figure 6: SEH UTN Manager – USB port activation
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5.3 How to Cut the Connection between the USB Device and the Client
If a USB device is connected to a client, the connection is of a point-to-point type. As long as the connection is established, other users cannot connect the USB device to their client and thus cannot use it. For this reason, you have to cut the connection once you do not use the USB device any longer.
To cut the connection between USB device and client, you deactivate the connection between the client and the
USB port of the UTN server to which the USB device is connected.
• Usually the connection is cut by the user via the SEH UTN Manager
• In addition, the administrator can deactivate the connection via the myUTN Control Center 42.
• You can also set up an automatic deactivation (Auto Disconnect) 44.
Cutting the Device Connection via the SEH UTN Manager
The SEH UTN Manager (complete version) is installed on the client 10.
The USB port is shown in the selection list
The USB port is connected to your client
1. Start the SEH UTN Manager.
2. In the selection list, select the port.
3. Select Port – Deactivate from the menu bar.
The connection will be deactivated.
Cutting the Device Connection via the myUTN Control Center
A USB port is connected to your client 41.
1. Start the myUTN Control Center.
2. Select START.
3. Choose the active connection from the Attached devices list and click the icon.
4. Confirm the security query.
The connection will be deactivated.
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5.4 How to Request an Occupied USB Device
If a USB device is connected to a client, the connection is of a point-to-point type. As long as the connection is established, other users cannot connect the USB device to their client and thus cannot use it.
If you want to use an occupied USB device, you can request it. The other user will receive a release request in form of a pop up. If the user follows your request and releases the USB device by deactivating the connection to the
USB device, the connection between the USB device and your client will automatically be activated.
The SEH UTN Manager (complete version) is installed on the client 10.
The SEH UTN Manager (complete version) is executed with graphical user interface on both clients.
The USB port is shown in the selection list
The USB port is connected to another client 41 (but not via Auto-Connect).
5. In the selection list, select the port.
6. In the menu bar, select Port – Request.
The release request will be sent.
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5.5 How to Automate USB Device Connections and Program Starts
Connections to USB ports of the UTN server and the connected USB devices can be automated. Simple to complex processes can be implemented.
• Automatic Connection If a USB Device Is Connected (Auto-Connect) 44
• Automatic Deactivation of the Connection after a Time Defined (Auto-Disconnect) 44
45 This chapter describes features of the SEH UTN Manager with which automa tisms are set up. Users who have expert knowledge in scripting should use the com -
Automatic Connection If a USB Device Is Connected (Auto-Connect)
Auto-Connect automatically establishes a connection to a USB port and the connected USB device as soon as a
USB device is connected to the USB port. Auto-Connect must be activated for each USB port and works for all USB devices which are connected to the USB port.
The SEH UTN Manager (complete version) is installed on the client 10.
The USB port is shown in the selection list
You are logged on to the client as administrator.
1. Start the SEH UTN Manager.
2. Select the UTN server from the selection list.
3. In the menu bar, select UTN server – Activate Auto-Connect.
The dialog Activate Auto-Connect appears.
4. Tick the option for the desired USB ports.
5. Click OK.
The setting will be saved. The connection to the USB port and the connected USB device is automatically and immediately activated. If you disconnect the USB device and reconnect it, the connection is again automati cally established.
Important:
If you manually deactivate an established USB port connection that was activated by Auto-Connect, the Auto-Connect setting will be deactivated as well. If you want to use Auto-Connect again, you will have to configure it anew later on.
Automatic Deactivation of the Connection after a Time Defined (Auto-Disconnect)
Auto-Disconnect deactivates the connection to a USB port and the connected USB device after a previously de fined time. 2 minutes before time runs out, the user will receive a notification and is asked to deactivate their con nection in order to prevent data loss and error states. Optionally, a one-off prolongation of the connection by the duration of the defined time can be activated. In this case, the user can choose to prolong the connection or de cline it when the notification pops up.
Auto-Disconnect allows a large number of network participants to access a small number of devices and avoids idle times.
You can be notified if a connection is automatically disconnected and the port thus is free. For this purpose, set up a notification if the USB port is available
The SEH UTN Manager (complete version) is installed on the client 10.
The UTN server is displayed in the 'Automatic Device Disconnect' area
You are logged on to the client as administrator.
1. Start the SEH UTN Manager.
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2. Select the SEH UTN server in the selection list.
3. In the SEH UTN Server menu, select the command "Activate Auto Disconnect".
The Activate Auto Disconnect dialog appears.
4. Activate the option for the desired USB ports.
5. Define the desired time period (10-9999 minutes).
6. Activate the Extension option if required.
7. Select the OK button.
The setting is saved
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5.6 How to Find Status Information on USB Ports and USB Devices
You can check the status of USB ports and USB devices at any given time. You can also configure automatic mes sages. You can use automatic messages to be notified when a USB port becomes available or to receive informa tion about the connection duration.
Important:
Automatic messages might not appear.
Messages depend on the system's window manager. Due to the multitude of Linux varieties (and window managers) notification via message might not be supported.
• Displaying Status Information 46
• Notification If a USB Port Becomes Available 46
• Message about the Duration of a Connection 46
Displaying Status Information
The SEH UTN Manager (complete version) is installed on the client 10.
The USB port is shown in the selection list
1. Start the SEH UTN Manager.
2. Select the USB port from the selection list.
The status information is displayed in the Properties area.
Notification If a USB Port Becomes Available
You will receive a message once a network participant deactivates the connection to a USB port and the connect ed USB device.
The SEH UTN Manager (complete version) is installed on the client 10.
The USB port is shown in the selection list
1. In the selection list, select the port.
2. In the menu bar, select Port – Settings.
The Port Settings dialog appears.
3. Tick the option under Messages.
4. Click OK.
The setting will be saved.
Message about the Duration of a Connection
You will receive a message if one of your connections to a USB port and the connected USB device exceeds a de fined time period.
The SEH UTN Manager (complete version) is installed on the client 10.
1. In the menu bar, select Program–Options.
The Options dialog appears.
2. Select the Program tab.
3. In the Messages area, tick the option.
4. Define the desired duration.
5. Click OK.
The setting will be saved.
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5.7 How to Use the Selection List and Manage User Access Rights with It
The selection list is the main element in the SEH UTN Manager and shows all embedded UTN servers. USB devices
list you consequently control the user's access to UTN servers and the connected USB devices.
By default, all client users use the global selection list in the SEH UTN Manager. However, you can set a user selec tion list for the client users. This list can be compiled by the users themselves. Alternatively, you as client admin istrator restrict user rights and provide a list with which only the UTN servers you define can be used.
Table 12: Differences in global and user selection list
Global Selection List User Selection List administrator list user administrators administrators global list
User individual lists
• All users of a client use the same selection list.
• Each user has their own selection list.
All administrators have the same selection list.
• The users can access all devices listed in the selec tion list.
(Provided that no security mechanisms have been specified via the myUTN Control Center.)
• The users can access all devices listed in the selec tion list.
(Provided that no security mechanisms have been specified via the myUTN Control Center.)
• List is stored at: /etc • List ('ini'-file) is stored at:
$HOME/.config/SEH Computertechnik
GmbH/SEH UTN Manager.ini
( $HOME is an environment variable for the user folder in
Linux; the path for the current user can be determined with using command line: echo $HOME
Example Ubuntu 20.0.4 LTS: echo $HOME yields /User home/User name
+
/.config/SEH Computertechnik GmbH/SEH
UTN Manager.ini
Complete path to the ini file:
/User home/User name/.config/SEH Com putertechnik GmbH/SEH UTN Manager.ini
)
• The selection list can be edited by administrators.
• The selection list can be edited by administrators or by users with write access to the ini-file.
Users with read-only access to the ini-file cannot edit the selection list and have limited access to
SEH UTN Managers functions.
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Which functions (selection list editing etc.) can be used in the SEH UTN Manager de pends on the selection list type (global/user) and user account type on the client (ad ministrator/user; user with/without write access to ini-file). For a detailed breakdown
see ’SEH UTN Manager – Feature Overview’ 104.
• Setting Up the Global Selection List for All Users 48
• Providing User Selection Lists 48
• Restrict Write Access to the 'SEH UTN Manager.ini'-file 49
Setting Up the Global Selection List for All Users
The global selection list is used by default.
The SEH UTN Manager (complete version) is installed on the client 10.
You are logged on to the system as administrator.
1. Start the SEH UTN Manager.
2. Compose the selection list
3. In the menu bar, select Program–Options.
The Options dialog appears.
4. Select the tab Selection List.
5. Tick Global selection list.
6. Click OK.
The setting will be saved. All users of a client use the same selection list.
Providing User Selection Lists
The SEH UTN Manager (complete version) is installed on the client 10.
You are logged on to the system as administrator.
1. Start the SEH UTN Manager.
2. In the menu bar, select Program–Options.
The Options dialog appears.
3. Select the tab Selection List.
4. Tick User selection list.
5. Click OK.
optional: With the following steps you provide a predefined selection list.
6. Create a selection list with the desired devices 39.
7. In the menu bar, select Selection List–Export.
The Export to dialog appears.
8. Save the file 'SEH UTN Manager.ini' to the user directories:
$HOME/.config/SEH Computertechnik GmbH/SEH UTN Manager.ini ( Table 12 47)
The setting will be saved. Each user uses their individual (predefined) selection list. The administrators share one selection list.
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Restrict Write Access to the 'SEH UTN Manager.ini'-file
User selection lists can be set up and edited by the users themselves.
In order to restrict users to just the UTN servers you want them to have access to, you can provide a list to users.
To do so, you as administrator store a predefined list for the user (
48) and limit the user to read-only access to
the 'SEH UTN Manager.ini'-file. By limiting the user to read-only access, all SEH UTN Manager functions concerning the selection list are disabled for the user.
Use the usual methods of your operating system to turn the ini-files into read-only files. For more information, read the documentation of your operating system.
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5.8 How to Use the SEH UTN Manager without Graphical User Interface
(utnm)
minimal version. To do so, the tool 'utnm' is utilized to use UTN features via the console of the operating system:
• directly, by entering commands in a certain syntax and executing them
• via scripts which contain commands in a certain syntax that will be executed automatically and step by step by the command line interpreter
Use scripts to automate frequently recurring command sequences such as port acti vations.
The execution of scripts can be automated as well, e.g. by means of login scripts.
• Using utnm via Console 53
• Creating a utnm Script 54
Syntax utnm -c "command string" [-<command>]
The executable file 'utnm' can be found in /usr/bin/ .
Commands
Rules for commands:
• Underlined elements are to be replaced by the appropriate values (e.g. server = IP address or host name of a UTN server)
• elements in square brackets are optional.
• not case-sensitive
• only the ASCII format can be read.
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Command
-c "command string" or
--command "command string"
-h or
--help
Description
Runs a command. The command is specified in greater detail by the com mand string. Command strings:
• activate server port number
Activates the connection to a USB port and the connected USB device.
• activate server vendor ID (VID) product ID (PID)
Activates the connection to a USB port and the first free connected
USB device with the defined IDs, if several identical USB devices are connected to the UTN server.
• deactivate server port number
Deactivates the connection to a USB port and the connected USB de vice.
• set autoconnect = true|false server port number
Enables/disables Auto-Connect (
• set portkey='port key' server port number
Stores a USB port key (
63) locally on the system. This way, the USB
port key is always automatically sent and must not be specified each time with the command -k USB port key respectively --key USB port key (see below).
(To remove the USB port key use the command string set portkey= server port number )
Important:
The command only sets the key permanently to make the
USB device available.
The USB port key configuration is done via the myUTN Con -
• find
Searches for all UTN servers in the network segment and shows the
UTN servers found with IP address, MAC address, model and software version.
• getlist server
Shows an overview of the USB devices connected to the UTN server
(including port number, vendor ID, product ID, vendor name, product name, device class, and status).
• state server port number
Displays the status of the USB device connected to the USB port.
Shows the help page.
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Command
-k USB port key or
--key USB port key
-mr or
--machine readable
-nw or
--no-warnings
-o or
--output
-p port number or
--port port number
-q or
--quiet
-sp port number or
--ssl-port port number
-t seconds or timeout seconds
-v or
--version
Working with the SEH UTN Manager
Description
Specifies a USB port key
Important:
The command only enters the key to make the USB device available.
Use the command -c "command string" respectively -command "command string" time (see above).
to permanently store a USB port key on the system so that it is sent automatically each
The USB port key configuration is done via the myUTN Con -
Separates the output of the command string getlist with tabulators and the output of find with commas.
Suppresses warning messages.
Shows the output in the command line.
Uses an alternative UTN port.
Use this command if you have changed the UTN port number ( 36).
Suppresses the output.
Uses an alternative UTN port with SSL/TLS encryption.
Use this command if you have changed the UTN SSL port number (
Specifies a timeout for the command strings activate and deacti vate .
Shows version information about utnm.
Return
After a command is executed, a return indicates success or failure of the process. The returned information is a
is returned.
The return can be used to determine how the process proceeds, e.g. in a script.
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Creating a utnm Script
The SEH UTN Manager is installed on the client
You know the UTN server’s IP address or host name.
You know how to create and use scripts in your operating system. If needed, refer to the documentation of your operating system.
1. Open a text editor.
2. Enter the sequence of commands; see ’Syntax’ 50, ’Commands’
3. Save the file as executable script on your client.
The script is saved and can be used.
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6 Security
The UTN server can be protected with various security mechanisms. These mechanisms secure the UTN server it self as well as the connected USB devices. In addition, you can integrate the UTN into the protection mechanisms implemented in your network.
• How to Encrypt the USB Connection 56
• How to Encrypt the Connection to the myUTN Control Center 58
• How to Define the Encryption Strength for SSL/TLS Connections 59
• How to Protect Access to the myUTN Control Center (User Accounts) 61
• How to Block Ports of the UTN Server (TCP Port Access Control) 62
• How to Control Access to USB Devices 63
• How to Block USB Device Types 65
• How to Use Certificates 66
• How to Configure Network Authentication (IEEE 802.1X) 71
Important:
Protect the access to the myUTN Control Center with user accounts so that security related settings cannot be tampered with by unauthorized persons.
You can also use SNMP and VLAN for security:
• ’How to Configure SNMP’ 25
• ’How to Use the UTN Server in VLAN Environments’ 29
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6.1 How to Encrypt the USB Connection
To secure the USB connections, you encrypt the data transfer between the clients and the USB devices connected to the UTN server. The encryption has to be activated individually for each connection, i.e. for each USB port.
Important:
Only payload will be encrypted. Control and log data will be transmitted without encryption.
For encryption the protocols SSL (Secure Sockets Layer) and its successor TLS (Transport Layer Security) are used.
The encryption strength is defined via the encryption protocol and level
WARNING
The SEH UTN Manager does not support the encryption level Low. If you set up
Low in combination with an encrypted USB connection, a connection cannot be established.
Use an encryption level as high as possible.
If connections are encrypted, client and UTN server communicate via the UTN SSL port. By default, that is port 9443.
UTN port UTN SSL port
SSL/TLS connection
UTN server
Figure 7: UTN server – SSL/TLS connection in the network
1. Start the myUTN Control Center.
2. Select SECURITY – Encryption.
3. Enable the encryption for the USB port.
4. To confirm, click Save.
The data transfer between the clients and the USB device will be encrypted.
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The encrypted connection will be displayed client-side in the SEH UTN Manager under
Properties .
Security
Figure 8:SEH UTN Manager – encryption
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6.2 How to Encrypt the Connection to the myUTN Control Center
You can protect the connection to the myUTN Control Center by encrypting it with the protocol SSL (Secure Sock ets Layer) and its successor TLS (Transport Layer Security).
• HTTP: unencrypted connection
• HTTPS: encrypted connection
The encryption strength is defined via the encryption protocol and level
59. When an encrypted connec
-
by the browser; read the documentation of your browser software.
WARNING
Current browsers do not support low security settings. With them a connection cannot be established.
Do not use the following combination: Encryption protocol HTTPS and encryption level Low.
1. Start the myUTN Control Center.
2. Select SECURITY – Device access.
3. In the Connection area, tick HTTP/HTTPS or HTTPS only.
4. To confirm, click Save.
The setting will be saved.
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6.3 How to Define the Encryption Strength for SSL/TLS Connections
Some connections to and from the UTN server can be encrypted with the protocol SSL (Secure Sockets Layer) and its successor TLS (Transport Layer Security):
• Email: POP3 (
• Email: SMTP (
• Web access to the myUTN Control Center: HTTPS (
The encryption strength and thus the safety of the connection is defined via the encryption protocol and level.
You can choose both.
Each encryption level is a collection of what is called cipher suites. A cipher suite in turn is a standardized se quence of four cryptographic algorithms that are used to establish a secure connection. Based on their encryption strength they are grouped to encryption levels. Which cipher suites are supported by the UTN server, i.e. are part of an encryption level, depends on the chosen encryption protocol. You can choose between two encryption lev els:
• Any: The encryption is automatically negotiated by both communicating parties. The strongest encryption supported by both parties will always be chosen.
• Low: Only cipher suites with a low encryption are used. (Fast data transfer)
• Medium
• High: Only cipher suites with an strong encryption are used. (Slow data transfer)
When a secure connection is established, the protocol to be used and a list of supported cipher suites are sent to the communication partner. A cipher suite is agreed upon that will be used later on. The strongest cipher suite that is supported by both parties will be used by default.
WARNING
If the communication partner of the UTN server does not support the protocol se lected and/or if there is no cipher suite that is supported by both parties, the SSL/
TLS connection will not be established.
If problems occur, select different settings or reset the parameters of the UTN server
If you want the UTN server and its communication partner to automatically negotiate the settings, set both options to Any . With these settings, the chances that a secure connection can be established are the highest.
1. Start the myUTN Control Center.
2. Select SECURITY – SSL connections.
3. In the Encryption protocol area, select the desired protocol.
WARNING
Current browsers do not support SSL. If you use an up-to-date browser and set the
combination SSL and HTTPS only for accessing the myUTN Control Center (
58), a connection cannot be established.
Use TLS (and not SSL).
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Important:
Which protocols are supported by the UTN server depends on the product hard ware and the installed firmware/software.
4. In the Encryption level area, select the desired level.
WARNING
Current browsers do not support cipher suites from the Low level. If you use an up-to-date browser and set the combination Low and HTTPS only for accessing the myUTN Control Center (
58), a connection cannot be established.
Use an encryption level as high as possible.
WARNING
The SEH UTN Manager does not support the encryption level Low. If you set up
Low in combination with an encrypted USB connection ( 56), a connection
cannot be established.
Use an encryption level as high as possible.
5. To confirm, click Save.
The setting will be saved.
Detailed information about the individual SSL/TLS connections (e.g. supported cipher suites) can be found on the details page SSL connection status – Details .
Security
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6.4 How to Protect Access to the myUTN Control Center (User Accounts)
By default, everyone who can find the UTN in the network can access its myUTN Control Center. To protect the
UTN from unwanted configuration changes, you can set up two user accounts:
• Administrator: Complete access to the myUTN Control Center. The user can see all pages and change settings.
• Read-only user: Very restricted access to the myUTN Control Center. The user can only see the 'START' page.
If you have set up user accounts, a login screen is displayed when the myUTN Control Center is started. You can choose between two login screens:
• List of users: User names are displayed. Only the password has to be entered.
• Name and password dialog: Neutral login screen in which user name and password have to be entered. (bet ter protection)
A user account allows for multiple logins, i.e. the account can be used by a single user or by a group of users. Up to 16 users can be logged in at the same time.
Important:
The user accounts for myUTN Control Center access are also used for SNMP 25.
Consider this when setting up user accounts.
For stronger security, you can use a session timeout. If there is no activity within a defined timeout, the user will automatically be logged out.
1. Start the myUTN Control Center.
2. Select SECURITY – Device access.
3. Define the two user accounts. To do this, in the area User accounts enter a User name and Password respec tively.
You can show the typing if you want to make sure that there are no typing errors in the password.
4. Tick Restrict Control Center access.
5. Choose the login screen type: list of users or name and password.
6. Tick Session timeout and into the Session duration box enter the time in Minutes after which the timeout is to be effective.
7. To confirm, click Save.
The settings will be saved.
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6.5 How to Block Ports of the UTN Server (TCP Port Access Control)
You can restrict access to the UTN server by blocking ports with the ‘TCP port access control’. If a port is blocked, the protocols respectively services using this port cannot establish a connection with the UTN server. Thus attack ers have less room for attack.
The security level defines which port types are blocked:
• UTN access (blocks UTN ports)
• TCP access (blocks TCP ports: HTTP/HTTPS/UTN)
• All ports (blocks IP ports)
You have to define exceptions so that your desired network elements, e.g. clients or DNS servers, can establish a connection with the UTN server.
WARNING
The ‘ test mode’ is active by default so that you can test your settings without lock ing yourself out. Your settings will be active until the UTN is restarted, afterwards access is no longer restricted.
After you have successfully tested your settings, you have to deactivate the test mode so that access control is permanent.
1. Start the myUTN Control Center.
2. Select SECURITY – TCP port access.
3. Tick Port access control.
4. In the Security level area, select the desired protection
5. In the Exceptions area, define the network elements that are to have access to the UTN server. To do this, en ter the IP or MAC (hardware) addresses and tick the options.
Important:
• MAC addresses are not delivered through routers!
• The use of wildcards (*) allows you to define subnetworks.
6. Make sure that the Test mode is enabled.
7. Click Save & Restart to confirm.
The settings will be saved.
The port access control is activated until the device is restarted.
8. Check the port access and if the myUTN Control Center can be reached.
Important:
If the myUTN Control Center cannot be reached, restart the UTN server 75.
9. Deactivate the Test mode.
10. Click Save & Restart to confirm.
The settings will be saved.
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6.6 How to Control Access to USB Devices
You can restrict the access to the USB ports and the connected USB devices:
• USB port key control A key is defined for the USB port. Neither the USB port nor the connected USB device are shown in the SEH UTN Manager, i.e. the USB device cannot be used. Only if the key for the USB port is entered in the SEH UTN Manager, the USB port and the connected USB device appear.
• USB port device assignment: A certain USB device is assigned to a USB port. This is achieved by linking the USB port and USB device through the vendor ID (short VID) and product ID (short PID) of the USB device. The com bination of VID and PID is specific to a certain USB device model which means that only USB devices of this specific model can be used on the USB port. This way you can assure, that (security) settings cannot be cir cumvented by connecting USB devices to other ports.
Power off unused ports to increase security 35.
• Setting Up USB Port Keys 63
• Entering a USB Port Key (Unlocking a USB Device) 63
• Setting up USB Port Device Assignment 64
Setting Up USB Port Keys
A key for a USB port is defined in the myUTN Control Center.
1. Start the myUTN Control Center.
2. Select SECURITY – USB port access.
3. For the desired USB port, go to the Method list and select Port key control.
4. Click Generate key or enter a freely definable key (max. 64 ASCII characters) into the Key box.
5. To confirm, click Save.
The settings will be saved. Access to the USB device is protected.
To deactivate the feature, go to the Method list and select --.
Entering a USB Port Key (Unlocking a USB Device)
To gain access to a USB device that is protected with the USB port key control, the corresponding key must be en tered in the SEH UTN Manager on the client.
1. Start the SEH UTN Manager.
2. In the selection list, select the UTN server.
3. In the menu bar, select UTN server – Set USB Port Keys .
The Set USB Port Keys dialog appears.
4. Enter the key for the relevant USB port.
5. Click OK.
Access is granted. The USB port and the connected USB device are shown in the selection list and can be used.
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Setting up USB Port Device Assignment
1. Start the myUTN Control Center.
2. Select SECURITY – USB port access.
3. For the desired USB port, go to the Method list and select Device assignment.
4. Click Reallocate device.
The USB device box shows the VID and PID of the USB device.
5. To confirm, click Save.
The settings will be saved. Only the assigned USB device model can be operated on the USB port.
To deactivate the feature, go to the Method list and select --.
Security
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6.7 How to Block USB Device Types
USB devices are grouped into classes according to their function. For example, input devices such as keyboards belong to the group 'Human Interface Device' (HID).
USB devices may present themselves as HID class USB devices while they are actually used for abuse (known as
'BadUSB').
In order to protect the UTN server, you can block input devices of the HID class.
1. Start the myUTN Control Center.
2. Select SECURITY – Device access.
3. Tick/clear Disable input devices (HID class) in the USB devices area.
4. To confirm, click Save.
The setting will be saved.
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6.8 How to Use Certificates
The UTN server has its own certificate management. Digital certificates are data sets, which confirm the identity of a person, object, or organization. In TCP/IP networks they are used to encrypt data and to authenticate com munication partners.
The UTN needs a certificate for:
• participating in the authentication mechanisms EAP-TLS, EAP-TTLS and PEAP
• protecting email communication (POP3/SMTP via SSL/TLS) 27
• protecting the connection between the clients and the connected USB devices
• protecting the connection to the myUTN Control Center (with HTTPS) 58
The following certificates can be used in the UTN server:
• 1 self-signed certificate
Certificate generated by the UTN server and signed by the UTN server itself. The certificate confirms the UTN server's identity.
• 1 client certificate, i.e. 1 requested certificate or 1 PKCS#12 certificate
The client certificate confirms the identity of the UTN server with the help of an additional trustworthy author ity which is the certification authority (short CA).
- Requested certificate: As first step, a certificate request is generated on the UTN server and then the request is sent to a certification authority. In the second step, the certification authority creates a certificate based on the request for the UTN server and signs it.
- PKCS#12 certificate Exchange format for certificates. You have a certification authority generate a certificate which is stored in password-protected PKCS#12 format for the UTN server. Then you transport the PKCS#12 file to the UTN server and install it (and thus the certificate in it).
• Mozilla Thunderbird1–32 CA certificates, also known as root CA certificates.
Certificates which are issued for a certification authority and confirm its identity. They are used for verifying certificates that have been issued by the respective certification authority. In case of the UTN server these are the certificates of communication partners to verify their identity (chain of trust). Thus multi-level public key infrastructures (PKIs) are supported.
Important:
Upon delivery, a default certificate is stored in the UTN server. This certificate is issued by SEH Computertechnik GmbH for each device specifically.
• Having a Look at Certificates 66
• Creating a Self-Signed Certificate 67
• Request and Install Certificate (Requested Certificate) 69
• Installing a PKCS#12 Certificate 69
• Installing an S/MIME certificate 70
• Installing a CA Certificate 70
• Deleting Certificates 70
Having a Look at Certificates
A certificate is installed on the UTN server.
1. Start the myUTN Control Center.
2. Select SECURITY – Certificates.
3. Select the certificate via the icon .
The certificate is displayed.
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Creating a Self-Signed Certificate
Important:
Only one self-signed certificate can be installed on the UTN server.
To create a new certificate, you must first delete the existing certificate
1. Start the myUTN Control Center.
2. Select SECURITY – Certificates.
3. Click Self-signed certificate.
4. Enter the relevant parameters; Table 13 67.
5. Click Create/Install.
The certificate will be created and installed. This may take a few minutes.
Table 13: Parameters for the Creation of Certificates
Parameters
Common name
Description
Freely definable certificate name. (max. 64 characters)
Email address
Organization name
Organizational unit
Location
State name
Domain component
SAN (multi-domain)
Country
Issued on
Expires on
Use the IP address or host name of the UTN server, so that you can clearly match device and certifi cate.
Email address of the person responsible for the UTN server.
(max. 40 characters; optional)
Name of the company which uses the UTN server.
(max. 64 characters)
Name of a department or subsection in the company.
(max. 64 characters; optional)
Location of the company.
(max. 64 characters)
State where the company is based.
(max. 64 characters)
Allows you to enter additional attributes.
(Optional entry)
Allows you to enter Subject Alternative Names (SAN). Is used to enter additional host names (e.g. domains).
(Optional entry, max. 255 characters)
Country where the company is based. Enter the two-digit country code accord ing to ISO 3166.
Examples: DE = Germany, GB = Great Britain, US = USA
Date from which on the certificate is valid.
Date from which on the certificate becomes invalid.
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Parameters
RSA key length
Description
Defines the length of the RSA key used:
• 512 bit (fast encryption and decryption)
• 768 bit
• 1024 bit (standard encryption and decryption)
• 2048 bit
• 4096 bit (slow encryption and decryption)
Security
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Request and Install Certificate (Requested Certificate)
A certificate that has been issued by a certification authority for the UTN server can be used in the UTN server.
To do this, your first create a certificate request and then send it to the certification authority. Based on the re quest, the certification authority then creates a certificate specifically for the UTN server. You install this certifi catein the UTN server.
Important:
You can only install a requested certificate that has been issued based on the cer tificate request created on the UTN server.
If the files do not match, you have to request a new certificate which is based on the current certificate request. If you want to start over, you must delete the certif -
1. Start the myUTN Control Center.
2. Select SECURITY – Certificates.
3. Click Certificate request.
4. Enter the required parameters;
5. Click Create a request.
The certificate request will be created. This may take a few minutes.
6. Select Upload and save the requests in a text file.
7. Click OK.
8. Send the text file as certificate request to a certification authority.
The certification authority creates the certificate and gives it to you.
Important:
The certificate must be in 'base64' format.
9. Click Requested certificate.
10. Enter the password into the Password box.
11. Click Install.
The requested certificate is installed in the UTN server.
Installing a PKCS#12 Certificate
Important:
If a PKCS#12 certificate has already been installed in the UTN server, you must first delete the certificate
The certificate has 'base64' format.
1. Start the myUTN Control Center.
2. Select SECURITY – Certificates.
3. Click PKCS#12 certificate.
4. Specify the PKCS#12 certificate in the Certificate file box.
5. Enter the password.
6. Click Install.
The PKCS#12 certificate will be installed in the UTN server.
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Installing an S/MIME certificate
Important:
If an S/MIME certificate has already been installed in the UTN server, you must first delete the certificate
Security
The certificate has 'pem' format.
1. Start the myUTN Control Center.
2. Select SECURITY – Certificates.
3. Click S/MIME certificate.
4. Specify the S/MIME certificate in the Certificate file box.
5. Click Install.
The S/MIME certificate is installed in the UTN server.
Installing a CA Certificate
The certificate has 'base64' format.
1. Start the myUTN Control Center.
2. Select SECURITY – Certificates.
3. Click CA certificate.
4. Specify the CA certificate in the Certificate file box.
5. Click Install.
The CA certificate is installed in the UTN server.
Deleting Certificates
WARNING
To establish an encrypted (HTTPS 58) connection to the myUTN Control Center,
a certificate (self-signed/CA/PKCS#12) is required. If you delete the corresponding certificate, the myUTN Control Center can no longer be reached.
In this case restart the UTN server 75. The UTN server then generates a new self-
signed certificate with which a secured connection can be established.
A certificate is installed on the UTN server.
1. Start the myUTN Control Center.
2. Select SECURITY – Certificates.
3. Select the certificate to be deleted via the icon .
The certificate is displayed.
4. Click Delete.
The certificate is deleted.
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6.9 How to Configure Network Authentication (IEEE 802.1X)
Authentication is the proof and verification of an identity. With it your network is protected from abuse, because only authorized devices have access.
The UTN supports authentication according to the IEEE 802.1X standard which is based on EAP (Extensible Au thentication Protocol).
If you use authentication according to IEEE 802.1X in your network, the UTN server can participate:
Configuring EAP-MD5
EAP-MD5 (Message Digest #5) is a user-based authentication via a RADIUS server. First, you have to create a user
(user name and password) on the RADIUS server for the UTN server. Afterwards you set up EAP-MD5 on the UTN server.
A user account for the UTN server is set up on the RADIUS server.
1. Start the myUTN Control Center.
2. Select SECURITY – Authentication.
3. From the Authentication method list, select MD5.
4. Enter the user name and the password of the user account that is set up for the UTN server on the RADIUS server.
5. Click Save & Restart to confirm.
The settings will be saved.
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Configuring EAP-TLS
EAP-TLS (Transport Layer Security) is a mutual, certificate based authentication via a RADIUS server. In this meth od, UTN server and RADIUS server exchange certificates through an encrypted TLS connection.
Both RADIUS and UTN server require a valid, digital certificate signed by a CA. This requires a PKI (Public Key Infra structure).
WARNING
Follow the instructions below in the given order. If you do not follow the order, the
UTN server might not be reachable in the network.
In this case, reset the parameters of the UTN serve
1. Create a certificate request on the UTN server
2. Create a certificate using the certificate request and the authentication server.
3. Install the requested certificate on the UTN server
4. Install the root CA certificate of the certification authority that has issued the certificate of the authentication
server (RADIUS) is installed in the UTN server 70.
5. Start the myUTN Control Center.
6. Select SECURITY – Authentication.
7. Select TLS from the Authentication method list.
8. From the list EAP root certificate, select the root CA certificate.
9. Click Save & Restart to confirm.
The settings will be saved.
Configuring EAP-TTLS
In EAP-TTLS (Tunneled Transport Layer Security), a TLS-protected tunnel is used for exchanging secrets. The meth od consists of two phases:
1. Outer authentication: An encrypted TLS (Transport Layer Security) tunnel is created between UTN server and
RADIUS server. To do this, the RADIUS server authenticates itself to the UTN server using a certificate that was signed by a CA.
2. Inner authentication: In the tunnel the authentication (via CHAP, PAP, MS-CHAP, or MS-CHAPv2) takes place.
A user account for the UTN server is set up on the RADIUS server.
For increased security during connection establishment (optional): The root CA certificate of the certification au thority that has issued the certificate of the authentication server (RADIUS) is installed in the UTN server
1. Start the myUTN Control Center.
2. Select SECURITY – Authentication.
3. Select TTLS from the Authentication method list.
4. Enter the user name and the password of the user account that is set up for the UTN server on the RADIUS server.
5. Select the settings which secure the communication in the TLS channel.
6. Increase the security during connection establishment (optional):
From the list EAP root certificate, select the root CA certificate.
7. Click Save & Restart to confirm.
The settings will be saved.
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Configuring PEAP
With PEAP (Protected Extensible Authentication Protocol), an encrypted TLS (Transport Layer Security) tunnel is established between the UTN server and the RADIUS server. To do this, the RADIUS server authenticates itself to the UTN server using a certificate that was signed by a CA. The TLS channel is then used to establish another con nection that can be protected by means of additional EAP authentication methods (e.g. MSCHAPv2).
A user account for the UTN server is set up on the RADIUS server.
For increased security during connection establishment (optional): The root CA certificate of the certification au thority that has issued the certificate of the authentication server (RADIUS) is installed in the UTN server
1. Start the myUTN Control Center.
2. Select SECURITY – Authentication.
3. Select PEAP from the Authentication method list.
4. Enter the user name and the password of the user account that is set up for the UTN server on the RADIUS server.
5. Select the settings which secure the communication in the TLS channel.
6. Increase the security during connection establishment (optional):
From the list EAP root certificate, select the root CA certificate.
7. Click Save & Restart to confirm.
The settings will be saved.
Configuring EAP-FAST
EAP-FAST (Flexible Authentication via Secure Tunneling) is a specific EAP method developed by the company Cis co.
As with EAP-TTLS (
73) a secure tunnel protects data transmission. However, the server does
not authenticate itself with a certificate. Instead it uses PACs (Protected Access Credentials).
A user account for the UTN server is set up on the RADIUS server.
1. Start the UTN Control Center.
2. Select SECURITY – Authentication.
3. Select FAST from the Authentication method list.
4. Enter the user name and the password of the user account that is set up for the UTN server on the RADIUS server.
5. Select the settings intended to secure the communication in the channel.
6. Click Save & Restart to confirm.
The settings will be saved.
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7 Maintenance
You can maintain the UTN server in the following ways:
• How to Restart the UTN Server 75
• How to Backup Your Configuration 77
• How to Reset Parameters to their Default Values 78
Maintenance
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7.1 How to Restart the UTN Server
After some parameter changes or after an update, the UTN server restarts automatically. If the UTN server is in an undefined state, you can also restart the UTN server manually.
• Restarting the UTN Server via the myUTN Control Center 75
• Restarting the UTN Server via Reset Button 75
Restarting the UTN Server via the myUTN Control Center
1. Start the myUTN Control Center.
2. Select MAINTENANCE – Restart.
3. Click Restart.
The UTN server restarts.
Restarting the UTN Server via Reset Button
1. Press the restart button of the device for a short time.
The UTN server restarts.
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7.2 How to Update
You can update your UTN server with a soft- and firmware update. New firmware/software contains new features and/or error fixes.
You can find the version number of the firmware/software installed on the UTN server on the start page of the myUTN Control Center.
For current firmware/software files go to the SEH Computertechnik GmbH website: https://www.seh-technology.com/services/downloads.html
Only the existing firmware/software is updated; settings will be preserved.
Important:
Every update file comes with a 'readme' file. Read the 'readme' file and follow its instructions.
1. Start the myUTN Control Center.
2. Select MAINTENANCE – Update.
3. Specify the update file in the Update file box.
4. Click Install.
The update is executed. Afterwards, the UTN server restarts.
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7.3 How to Backup Your Configuration
All settings of the UTN server (exception: passwords) are saved in the file '<Default-Name>_parameters.txt'.
You can save this parameters file as backup copy to your local client. This way you can return to a stable configu ration status at any time.
You can edit the parameter values in the backed up file using a text editor . Afterwards, the edited file can be load ed onto one or more UTN servers. The device(s) will then adopt the parameter values of the file.
You can find a detailed description of the parameters in the ’Parameter Lists’ 84.
• Saving the Parameter File 77
• Loading the Parameters File onto a UTN Server 77
See Parameter Values
1. Start the myUTN Control Center.
2. Select MAINTENANCE – Parameter backup.
3. Click the icon .
The current parameter values are displayed.
Saving the Parameter File
1. Start the myUTN Control Center.
2. Select MAINTENANCE – Parameter backup.
3. Click the icon .
4. Save the '<default name>_parameters.txt' file to a local system using your browser.
The parameters file is backed up.
Loading the Parameters File onto a UTN Server
1. Start the myUTN Control Center.
2. Select MAINTENANCE – Parameter backup.
3. In the Parameter file box, specify the '<default name>_parameters.txt' file.
4. Click Import.
The UTN server adopts the parameter values from the file.
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7.4 How to Reset Parameters to their Default Values
You can reset the UTN to its default values, e.g. if you want to install the UTN server in a different network. All set tings will be set to factory settings. Installed certificates will not be deleted.
Important:
The connection to the myUTN Control Center my be interrupted if the IP address of the UTN server changes with the reset.
If required, determine the new IP address 20.
You can change the settings either via remote access (myUTN Control Center) or via the reset button on the UTN server.
If you lost the password for the UTN Control Center, you can reset the UTN server via the reset button. You do not need a password to do so.
• Resetting Parameters via myUTN Control Center 78
• Resetting Parameters via Reset Button 78
Resetting Parameters via myUTN Control Center
1. Start the myUTN Control Center.
2. Select MAINTENANCE – Default settings.
3. Click Default settings.
A security query appears.
4. Confirm the security query.
The parameters are reset.
Resetting Parameters via Reset Button
With the reset button you can reset the UTN server’s parameter values to their default settings.
1. Press the reset button for 5 seconds.
The UTN server restarts.The parameters are reset.
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8 Appendix
The appendix contains a glossary, the troubleshooting and the lists of this document.
• SEH UTN Manager – Feature Overview 104
Appendix
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8.1 Glossary
Appendix
Compound USB device
A compound USB device consists of a hub and one or more USB devices that are all integrated into a single hous ing. Dongles are often compound USB devices.
If a compound USB device is connected to a USB port of the UTN server, all integrated USB devices will be shown in the myUTN Control Center and in the selection list of the SEH UTN Manager. When the port connection is ac tivated, all displayed USB devices will be connected to the user's client. It is not possible to activate a port con nection to only one of the USB devices.
Default name
Device name which is assigned by the manufacturer and cannot be changed. If you are using several identical
UTN servers, you can identify a certain device with it.
The default name of the UTN server is made up of the two letters 'IC' and the device number. The device number consists of the last six numbers of the hardware address.
You can see the default name in the myUTN Control Center.
Hardware address
The hardware address (often also referred to as Ethernet address, physical address or MAC address) is the world wide unique identifier of a network interface. If you are using several identical UTN servers, you can identify a certain device with it.
The manufacturer has defines the address in the hardware of the device. It consists of 12 hexadecimal num bers. The first six numbers represent the manufacturer, while the last six numbers identify the individual device. The characters for separating the numbers depend on the platform. In Linux ':' are used.
Hardware address
00:c0:eb:00:01:ff
Manufacturer ID Device number
You can see the hardware address on the housing or in the SEH UTN Manager.
myUTN Control Center
The myUTN Control Center is the user interface of the UTN server. The UTN server can be configured and mon itored via the myUTN Control Center.
You access the myUTN Control Center with an Internet browser (e.g. Mozilla Firefox).
SEH UTN Manager
The 'SEH UTN Manager' is a software tool developed by SEH Computertechnik GmbH . The SEH UTN Manager is used to establish and manage connections to the USB devices connected to the UTN servers.
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8.2 Troubleshooting
In this chapter, a few problems are described, explained and fixed.
Appendix
Problem
• UTN Server: BIOS Mode 81
• UTN Server: Connection Cannot Be Established 81
• myUTN Control Center: Connection Cannot Be Established 82
• myUTN Control Center: You Lost User Name and/or Password 82
• SEH UTN Manager: A Connection to the USB device Cannot Be Established 82
• SEH UTN Manager: USB Devices Are Not Shown 82
• SEH UTN Manager: Features Are Not Available or Deactivated 83
Fix
UTN Server: BIOS Mode
The UTN server switches to the BIOS mode if the firmware works but the software is faulty. This may happen in the case of an incorrect software update, for example.
The LEDs indicate the BIOS mode:
• Status LED is off
• Activity LED blinks periodically
WARNING
The UTN server is not operational if it is in BIOS mode.
UTN Server: Connection Cannot Be Established
You find the UTN server in the network and can reach it via TCP/IP connection. However, a connection via the SEH
UTN Manager cannot be established.
Possible causes:
• A firewall or some other security software blocks communication.
Add the UTN port respectively UTN SSL port as exception to your firewall or security software. Refer to the doc umentation of your firewall or security software on how to do this.
• The port numbers in the SEH UTN Manager and on the UTN server are not identical: You changed the port number while SNMPv1 is deactivated, so that the change cannot be communicated to the SEH UTN Manager
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Eliminate possible error sources. Check:
• the cabling connections,
• the IP address of the UTN server 20
• the proxy settings of your browser (refer to the documentation of your browser for more information)
If you still cannot establish any connection, the following safety mechanisms might be the cause:
• Access is protected via SSL/TLS (HTTPS) 58.
• Access is protected via SSL/TLS (HTTPS) and you deleted the certificate (self-signed/CA/PKCS#12)
Reset the UTN server to its default parameter values
78.In the process, new certificates will be created.
WARNING
If you reset the device, all settings are lost and the IP address might change.
If required, determine the new IP address
• TCP port access control is enabled
• The cipher suites of the encryption level are not supported by the browser 59.
myUTN Control Center: You Lost User Name and/or Password
If the access to the myUTN Control Center is protected but you have lost the access credentials, you can reset the
UTN server to its default values. After the reset you can access the myUTN Control Center again, as it is not pro tected by default.
WARNING
If you reset the device, all settings are lost and the IP address might change.
If required, determine the new IP address
SEH UTN Manager: A Connection to the USB device Cannot Be Established
Possible causes:
• The USB port is already connected to another client.
Wait until the other user terminates the connection or request the device 42.
• The driver software for the USB device is not installed on the client.
Install the driver software for your USB device. Refer to the documentation of your USB device on how to do this.
SEH UTN Manager: USB Devices Are Not Shown
Eliminate possible error sources: Check if the USB device is connected to the UTN server.
If the USB device is still not displayed, the following issues might be the cause:
• Several compound USB devices (
80) are connected to the UTN server. Each integrated USB device occu
pies a virtual USB port of the UTN server. The number of these virtual USB ports is limited. If the limit is reached,
no further USB devices can be used on this UTN server ( 41).
• The USB port is deactivated
• The USB port key control is activated for the USB device
Only once the key for the USB port is entered in the SEH UTN Manager, the USB port and the connected USB device appear.
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SEH UTN Manager: A USB Device Is Connected to the USB Port, but several USB Devices Are Displayed
Possible causes:
• A USB hub is connected to the USB port of the UTN server.
• The connected USB device is a compound USB device (
80). It consists of a hub and one or more USB de
vices that are all integrated into a single housing. When the connection to the USB port is established, all dis played USB devices will be connected to the user’s client and can be used.
SEH UTN Manager: Features Are Not Available or Deactivated
Possible causes:
• Your client user account does not have the required administrative rights. This restricts user rights in the SEH
Start the SEH UTN Manager as administrator. Refer to the documentation of your operating system on how to do this.
• A function is not supported by the connected USB device.
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8.3 Parameter Lists
The UTN servers stores its configuration as parameters. You directly use parameters for:
• Administration via email
• Configuration backup (viewing, editing and loading parameters onto other devices)
The following tables list all parameters and their values so that you can use them in the actions named above.
• Table 14 ’Parameter list – IPv4’ 85
• Table 15 ’Parameter list – IPv6’ 86
• Table 16 ’Parameter list – DNS’ 86
• Table 17 ’Parameter list – SNMP’ 87
• Table 18 ’Parameter list – Bonjour’ 88
• Table 19 ’Parameter list – POP3’ 89
• Table 20 ’Parameter list – SMTP’ 90
• Table 21 ’Parameter list – IPv4-VLAN’ 92
• Table 22 ’Parameter list – Date/Time’ 93
• Table 23 ’Parameter list – Description’ 93
• Table 24 ’Parameter list – USB port’ 93
• Table 25 ’Parameter list – UTN port’ 94
• Table 26 ’Parameter list – Notification’ 95
• Table 27 ’Parameter list – SSL/TLS connections’ 96
• Table 28 ’Parameter list – myUTN Control Center security’ 98
• Table 29 ’Parameter list – TCP port access’ 100
• Table 30 ’Parameter list – USB connection encryption’ 101
• Table 31 ’Parameter list – USB device type blocking’ 101
• Table 33 ’Parameter list – Authentication’ 102
• Table 34 ’Parameter list – Miscellaneous’ 103
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Table 14: Parameter list – IPv4
Parameters ip_addr
[IP address] ip_mask
[Subnet mask] ip_gate
[Gateway] ip_dhcp
[DHCP] ip_bootp
[BOOTP] ip_auto
[ARP/PING]
Value valid IP address valid IP address valid IP address on/off on/off on/off
Default
169.254.0.0/
16
Description
IP address of the UTN server.
255.255.0.0
Subnet mask of the UTN server.
Subnet masks are used to logically partition big networks into subnetworks. If you are using the
UTN server in a subnetwork, it requires the sub net mask of the subnetwork.
0.0.0.0
on on
IP address of the network's standard gateway which the UTN server uses.
With a gateway, you can address IP addresses from other networks.
Enables/disables the DHCP protocol.
If DHCP is enabled in your network, IP address assignment is automatic.
Enables/disables the BOOTP protocol.
on
If BOOTP is enabled in your network, IP address assignment is automatic.
Enables/disables the ARP/PING protocol.
You can use the commands ARP and PING to change an IP address which was assigned via
Zeroconf. The implementation depends on your system; read the documentation of your operat ing system.
We recommend that you deactivate DHCP , BOOTP and ARP/PING as soon as the
UTN server has received its IP address.
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Table 15: Parameter list – IPv6
Parameters ipv6
[IPv6] ipv6_auto
[Automatic configuration] ipv6_addr
[IPv6 address] ipv6_gate
[Router] ipv6_plen
[Prefix length]
Value on/off on/off n:n:n:n:n:n:n:n n:n:n:n:n:n:n:n
0–64
[1–2 characters;
0–9]
Default on on
: :
: :
64
Table 16: Parameter list – DNS
Parameters dns
[DNS] dns_domain
[Domain name] dns_primary
[Primary DNS server]
Value on/off max. 255 characters
[a–z, A–Z, 0–9] valid IP address
Default on
[blank]
0.0.0.0
dns_secondary
[Secondary DNS server] valid IP address 0.0.0.0
Appendix
Description
Enables/disables the IPv6 functionality of the
UTN server.
Enables/disables the automatic assignment of the IPv6 address to the UTN server.
Defines an IPv6 unicast address in the format n:n:n:n:n:n:n:n which is manually assigned to the UTN server.
• Every 'n' represents the hexadecimal value of one of the eight 16 bit elements of the ad dress.
• Leading zeros can be omitted.
• An IPv6 address may be entered or displayed using a shortened version when successive fields contain all zeros (0). In this case, two colons (::) are used.
Manually defines a static router to which the
UTN server sends its requests.
Defines the length of the subnet prefix for the
IPv6 address. The value 64 is preset.
Address ranges (e.g. your network) are specified with prefixes. To do this, the prefix length (num ber of bits used) is added to the IPv6 address as a decimal number and the decimal number is preceded by '/'.
Description
Enables/disables the name resolution via a DNS server.
Defines the IP address of the primary DNS server.
Defines the IP address of the secondary DNS server.
The secondary DNS server is used if the first one is not available.
Defines the domain name of an existing DNS server.
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snmpv3
[SNMPv3] any_hash
[Hash] any_rights
[Access rights] any_cipher
[Encryption] admin_hash
[Hash] admin_rights
[Access rights] admin_cipher
[Encryption] myUTN User Manual Linux
Table 17: Parameter list – SNMP
Parameters snmpv1
[SNMPv1] snmpv1_ronly
[Read-only] snmpv1_community
[Community]
Value on/off on/off max. 64 characters
[a–z, A–Z, 0–9]
Default on off public on/off md5 sha
--readonly readwrite
--aes des md5 sha
--readonly readwrite
--aes des on md5 readonly
--md5 readwrite
---
Appendix
Description
Enables/disables SNMPv1.
Enables/disables the write protection for the community.
SNMP community name Enter the name as it is defined in the monitoring station.
Important:
The default name is 'public'. This name is commonly used for read/ write communities. We recom mend to change it as soon as possi ble to increase security.
Enables/disables SNMPv3.
Specifies the hash algorithm for SNMP user group 1.
Defines the access rights of the SNMP user group 1.
--- = [none]
Defines the encryption method of the SNMP user group 1.
--- = [none]
Specifies the hash algorithm for SNMP user group 2.
Defines the access rights of the SNMP user group 2.
--- = [none]
Defines the encryption method of the SNMP user group 2.
Important:
The UTN server user accounts are also used as SNMP user accounts 25. Consider
this when setting up user accounts.
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Table 18: Parameter list – Bonjour
Parameters bonjour
[Bonjour] bonjour_name
[Bonjour name]
Value on/off max. 64 characters
[a–z, A–Z, 0–9]
Default on
[Default name]
Appendix
Description
Enables/disables Bonjour.
Defines the Bonjour name of the myUTN server.
The myUTN server uses this name to announce its Bonjour services. If no Bonjour name is entered, a default name will be used (device name@ICxxxxxx).
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Table 19: Parameter list – POP3
Parameters pop3
[POP3] pop3_srv
[Server name]
Value on/off
Default off max. 128 characters [blank] pop3_port
[Server port]
1–65535
[1–5 characters;
0–9]
110 pop3_sec
[Security] pop3_poll
[Check mail every] pop3_limit
[Ignore mail exceed ing] pop3_usr
[User name] pop3_pwd
[Password]
0–2
[1 character; 0–2]
1–10080
[1–5 characters;
0–9]
0–4096
0
2
4096
[1–4 characters;
0–9] max. 128 characters [blank] max. 128 characters [blank]
Appendix
Description
Enables/disables the POP3 functionality.
Defines the POP3 server via its IP address or host name.
A host name can only be used if a DNS server was configured beforehand.
Defines the port which the UTN server uses to receive emails.
The default port number for POP3 is 110. The default port number for SSL/TLS (parameter
’POP3 – Security’ 27) is 995. If required, read
the documentation of your POP3 server.
Defines the authentication method to be used:
• APOP: encrypts the password when logging on to the POP3 server.
• SSL/TLS: encrypts the entire communication with the POP3 server. The encryption strength is defined via the encryption proto col and level
0 = no security
1 = APOP
2 = SSL/TLS
Defines the time interval (in minutes) which with the POP3 server is checked for emails.
Defines the maximum email size (in Kbyte) to be accepted by the UTN server.
0 = unlimited
Defines the user name used by the UTN server to log on to the POP3 server.
Defines the user password used by the UTN server to log on to the POP3 server.
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Table 20: Parameter list – SMTP
Parameters smtp_srv
[Server name]
Value Default max. 128 characters [blank] smtp_port
[Server port]
1–65535
[1–5 characters;
0–9]
25 smtp_ssl
[SSL/TLS] smtp_sender
[Sender name] smtp_auth
[Login] smtp_usr
[User name] smtp_pwd
[Password] smtp_sign
[Security (S/MIME)] smtp_attpkey
[Attach public key] on/off on/off on/off off max. 128 characters [blank] off max. 128 characters [blank] max. 128 characters [blank] on/off off on
Appendix
Description
Defines the SMTP server via the IP address or the host name.
A host name can only be used if a DNS server was configured beforehand.
Defines the port which the UTN server and
SMTP server use to communicate.
The default port number for SMTP is 25. For SSL/
TLS (parameter ’SMTP – SSL/TLS’ 28), SMTP
servers use by default port 587 (STARTSSL/
STARTTLS) or the old port 465 (SMTPS). If required, read the documentation of your SMTP server.
Enables/disables SSL/TLS.
SSL/TLS encrypts the communication from the
UTN to the SMTP server. The encryption strength is defined via the encryption protocol
Defines the email address used by the UTN server to send emails.
Very often the name of the sender and the email account user name are identical.
Enables/disables SNMP authentication (SMTP
AUTH). To send emails, the UTN sends its user name and password to the SMTP server to authenticate itself. Enter user name (parameter
’SMTP – User name’ 28) and password
(parameter ’SMTP – Password’ 28).
Some SMTP servers require SMTP authentica tion to prevent fraudulent use (spam).
Defines the user name used by the UTN server to log on to the SMTP server.
Defines the password used by the UTN server to log on to the SMTP server.
Enables/disables the email security standard S/
MIME (Secure/Multipurpose Internet Mail
Extensions). S/MIME is used to sign (parameter
’SMTP – Signing emails’ 28) or encrypt
(parameter ’SMTP – Full encryption’ 28)
emails. Enable the desired feature (if desired
with ’SMTP – Attach public key’ 28).
Sends the public key together with the email.
Many email clients require the key to display the email.
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Parameters smtp_encrypt
[Full encryption]
[Signing emails]
Value on/off
Default off
Appendix
Description on = Activates the encryption of emails. Only the intended recipient can open and read the encrypted email.
An S/MIME certificate is required for the encryption
off = Activates the signing of emails. The recipi ent can use the signature to check the sender's identity. This proves, that the email has not been altered.
An S/MIME certificate is required for the
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Table 21: Parameter list – IPv4-VLAN
Parameters ip4vlan_mgmt
[IPv4 management
VLAN]
Value on/off ip4vlan_mgmt_id
[VLAN-ID] ip4vlan_mgmt_any
[Access from any
VLAN]
Default off
0–4096
[1–4 characters; 0–9] on/off
0 off on ip4vlan_mgmt_untag
[Access via LAN
(untagged)] on/off ipv4vlan_on_1
~ ipv4vlan_on_20
[VLAN] ipv4vlan_addr_1
~ ipv4vlan_addr_20
[IP address] ipv4vlan_mask_1
~ ipv4vlan_mask_20
[Subnet mask] ip4vlan_gate_1
~ ip4vlan_gate_20
[Gateway] ipv4vlan_id_1
~ ipv4vlan_id_20
[VLAN-ID] utn_2vlan_1
~ utn_2vlan_20
[Allocate VLAN] on/off valid IP address valid IP address valid IP address
0–4096
[1–4 characters;
0–9]
0–9
[1 character; 0–9] off
192.168.0.0
255.255.255.
0
0.0.0.0
0
0
Description
Enables/disables the forwarding of IPv4 man agement VLAN data.
If this option is enabled, SNMP is only available in the IPv4 management VLAN.
ID for the identification of the IPv4 manage ment VLAN.
Enables/disables the administrative access
(web) to the UTN server via IPv4 client VLANs.
If this option is enabled, the UTN server can be administrated via all VLANs.
Enables/disables the administrative access to the UTN server via IPv4 packets without tag.
If this option is disabled, the UTN server can only be administrated via VLANs.
Enables/disables the forwarding of IPv4 client
VLAN data.
Subnet mask of the UTN server within the IPv4 client VLAN.
IP gateway address in the IPv4 management
VLAN.
With a gateway, you can address IP addresses from other networks.
ID for the identification of the IPv4 client VLAN.
Allocates a VLAN to the USB port.
0 = every
1 = VLAN 1
2 = VLAN 2 etc.
9 = none
Appendix
IP address of the UTN server within the IPv4 cli ent VLAN.
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Table 22: Parameter list – Date/Time
Parameters ntp
[Date/Time] ntp_server
[Time server]
Value on/off max. 64 characters
[a–z, A–Z, 0–9] ntp_tzone
[Time zone]
Default on
Description
Enables/disables the use of a time server (SNTP).
UTC, GMT, EST, EDT,
CST, CDT, MST, MDT,
PST, PDT, etc.
pool.ntp.org
Defines a time server via the IP address or the host name.
The host name can only be used if a DNS server was configured beforehand.
Important:
CET/CEST
(EU)
If your network in configured accordingly, the UTN server receives the time server settings automatically via DHCP. A time server assigned in such a manner always takes precedence over man ual settings.
Compensates Coordinated Universal Time (UTC) for location and national particularities (day light saving time etc.).
Table 23: Parameter list – Description
Parameters sys_name
[Host name]
Value max. 64 characters
[a–z, A–Z, 0–9]
Default
[blank] sys_descr
[Description] max. 64 characters
[a–z, A–Z, 0–9]
[blank]
[blank]
Description
Device name as alternative to IP address. With a name you can identify the UTN server more eas ily in the network, e.g. if you are using several
UTN servers.
Is displayed in the myUTN Control Center and
SEH UTN Manager.
Device description, e.g. location or department.
Is displayed in the myUTN Control Center and
SEH UTN Manager.
Contact person, e.g. device administrator.
Is displayed in the myUTN Control Center.
sys_contact
[Contact person] max. 64 characters
[a–z, A–Z, 0–9]
Table 24: Parameter list – USB port
Parameters utn_tag_1
~ utn_tag_20
[Port name] utn_poff_1
~ utn_poff_20
[Port]
Value max. 32 characters
[a–z, A–Z, 0–9] on/off
Default
[blank] off
Description
Freely definable name of the USB port.
Disables/enables the power supply for the USB port (i.e. the USB device connected to the port).
off = power on on = power off
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Table 25: Parameter list – UTN port
Parameters utn_port
[UTN port]
Value
1–9200
[1–4 characters;
0–9]
Default
9200 utn_sslport
[UTN SSL port]
1–9443
[1–4 characters;
0–9]
9443
Appendix
Description
Defines the number of the UTN port (for unen crypted connections).
WARNING
The UTN port must not be blocked by security software (firewall).
Defines the number of the UTN SSL port (for encrypted connections).
WARNING
The UTN SSL port must not be blocked by security software (fire wall).
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Table 26: Parameter list – Notification
Parameters mailto_1 mailto_2
[Email address] noti_stat_1 noti_stat_2
[Status email] notistat_d
[Interval]
Value valid email address
[max. 64 characters] on/off we th fr sa al su mo tu
Default
[blank] off al notistat_h
[hh]
0–23
[1–2 characters;
0–9]
0 notistat_tm
[mm] noti_dev_1 noti_dev_2
[Send email if USB devices are connected or disconnected] noti_act_1 noti_act_2
[Send email if USB port is activated or deacti vated]
0–5
[1 character; 0–5] on/off on/off
0 off off
Appendix
Description
Email address of the recipient for notifications.
Enables/disables the periodical sending of a sta tus email to recipient 1 or 2.
Defines the day (the interval) on which a status email is sent.
al = daily su= Sunday mo= Monday tu= Tuesday we= Wednesday th= Thursday fr = Friday sa= Saturday
Specifies the time (hour) at which a status email is sent.
1 = 1. hour
2 = 2. hour
3 = 3. hour etc.
Specifies the time (minute) at which a status email is sent.
0 = 00 min
1 = 10 min
2 = 20 min
3 = 30 min
4 = 40 min
5 = 50 min
Enables/disables the sending of emails after a
USB device was connected to/removed from the UTN server.
Enables/disables the sending of emails after a
USB port (i.e. the connection to the connected
USB device) was activated/deactivated.
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Parameters noti_pup_1 noti_pup_2
[Send email if UTN server is restarted] trapto_1 trapto_2
[Address] trapcommu_1 trapcommu_2
[Community] trapdev
[Send trap if USB devices are connected or disconnected] trapact
[Send trap if USB ports are activated or deacti vated] trappup
[Send trap if UTN server is restarted]
Value on/off valid IP address max. 64 characters
[a–z, A–Z, 0–9] on/off on/off on/off
Default off
0.0.0.0
public off off off
Table 27: Parameter list – SSL/TLS connections
Parameters sslmethod
[Encryption protocol]
Value any sslv3 tls10 tls11 tls12
Default any
Appendix
Description
Enables/disables the sending of emails when the UTN server restarts.
SNMP trap address of the recipient.
SNMP trap community of the recipient.
Enables/disables the sending of SNMP traps after a USB device was connected to/removed from the UTN server.
Enables/disables the sending of SNMP traps after a USB port (i.e. the connection to the con nected USB device) was activated/deactivated.
Enables/disables the sending of SNMP traps when the UTN server is restarted.
Description
Defines the encryption protocol for SSL/TLS connections.
any = at will (automatic negotiation) sslv3 = SSL 3.0
tls10 = TLS 1.0
tls11 = TLS 1.1
tls12 = TLS 1.2
WARNING
Current browsers do not support low security settings. If you use SSL with a current browser and the set ting HTTPS only for access to the
myUTN Control Center ( 58), a
connection cannot be established.
Use TLS (and not SSL).
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Parameters security
[Encryption level]
Value
1–4
[1 character; 1–4]
Default
4
Appendix
Description
Defines the encryption level for SSL/TLS con nections.
1 = low
2 = medium
3 = high
4 = any (automatic negotiation)
WARNING
Current browsers do not support cipher suites from the Low level. If you use Low with a current browser and the setting HTTPS
only for access to the myUTN Con trol Center (
cannot be established.
Use an encryption level as high as possible.
WARNING
The SEH UTN Manager does not support the encryption level Low.
If you set up Low in combination with an encrypted USB connection, a connection cannot be estab lished.
Use an encryption level as high as possible.
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Table 28: Parameter list – myUTN Control Center security
Parameters http_allowed
[Connection] sessKeys
[Restrict Control Cen ter access] admin_name
[Administrator – User name] admin_pwd
[Administrator – Pass word] any_name
[Read-only user – User name]
Value on/off on/off max. 64 characters
[a–z, A–Z, 0–9]
8–64 characters
[a–z, A–Z, 0–9] max. 64 characters
[a–z, A–Z, 0–9]
Default on off admin
Description
Defines the connection type (HTTP/HTTPS) to be used for connecting to the myUTN Control
Center.
on = HTTP/HTTPS off = HTTPS only
The encryption strength is defined via the encryption protocol and level
WARNING
Current browsers do not support low security settings. With them a connection cannot be established.
Do not use the following combina tion: Encryption protocol HTTPS and encryption level Low.
When the connection is estab lished, the identity of the UTN server is verified. For that, the client asks for the certificate via the browser (
cate must be accepted by the browser; read the documentation of your browser software.
Enables/disables the myUTN Control Center user accounts. If they are enabled, a login screen is displayed when opening the myUTN Control
Center.
Important:
Define user accounts (user names and passwords).
Defines the user name for the administrator user account.
Important:
Also is the user name of the
administrator Defines the password for the administrator user account.
Important:
Also is the password of the
anonymous Defines the user name for the read-only user account.
Important:
Also is the user name of the
SNMPv3 user account
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Parameters any_pwd
[Read-only user – Pass word]
Value max. 64 characters
[a–z, A–Z, 0–9]
Default
[blank] sessKeyUList
[Login screen displays] on/off on sessKeyTimer
[Session timeout] sessKeyTimeout
[Session timeout] on/off
120–3600
[3–4 characters;
0–9] on
600
Appendix
Description
Defines the password for the read-only user account.
Important:
Also is the password of the SNMPv3 user account
Defines the type of login screen.
on= Shows a user list, only password must be entered off= neutral login mask, user name and pass word must be entered
Enables/disables the session timeout.
Time in seconds after which the timeout is to be effective.
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Table 29: Parameter list – TCP port access
Parameters protection
[Port access control] protection_level
[Security level]
Value on/off protec_utn protec_tcp protec_all on/off
Appendix
Default off
Description
Enables/disables the blocking of selected ports and thus connections to the UTN server.
protec_utn Specifies the port types to be blocked: protec_utn= UTN access (UTN ports) off protec_tcp= TCP access (TCP ports: HTTP/
HTTPS/UTN) protec_all = all ports (IP ports)
Enables/disables an exception from the port locking.
ip_filter_on_1
~ ip_filter_on_8
[IP address] ip_filter_1
~ ip_filter_8
[IP address] hw_filter_on_1
~ hw_filter_on_8
[MAC address] hw_filter_1
~ hw_filter_8
[MAC address] protection_test
[Test mode] valid IP address on/off valid hardware address on/off
[blank] off
Defines networks elements that are excluded from port blocking via their IP address.
Enables/disables an exception from the port locking.
Important:
The use of wildcards (*) allows you to define subnetworks.
00:00:00:00:0
0:00 on
Defines elements that are excluded from port locking using the MAC address (hardware address).
Important:
MAC addresses are not delivered through routers!
Enables/disables the test mode.
WARNING
The test mode is active by default so that you can test your settings without locking yourself out. Your settings will be active until the UTN is restarted, afterwards access is no longer restricted.
After you have successfully tested your settings, you have to deacti vate the test mode so that access control is permanent.
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Table 30: Parameter list – USB connection encryption
Parameters utn_sec_1
~ utn_sec_20
[USB port]
Value on/off
Default off
Appendix
Description
Enables/disables the SSL/TLS encryption for the connection between USB port (i.e. USB device) and client.
Important:
Only payload will be encrypted.
Control and log data will be trans mitted without encryption.
Table 31: Parameter list – USB device type blocking
Parameters utn_hid
[Disable input devices
(HID class)]
Value on/off
Default on
Table 32: Parameter list – IPv4-VLAN
Parameters utn_accctrt_1
~ utn_accctrt_20
[Method]
Value
--- ids key keyids
Default
--- utn_keyval_1
~ utn_keyval_20
[Key] utn_vendprodIDs_1
~ utn_vendprodIDs_20
[USB device] max. 64 characters
[a–z, A–Z, 0–9]
[blank]
Description
Enables/disables the blocking of input devices
(HID – human interface devices).
on = no blocking off = blocking
Description
Defines the method(s) for limiting the access and use of the USB port and the connected USB device.
--- = no protection ids = device assignment key = port key control keyids = device assignment and key control
Defines the key for the USB port and the con nected USB device when port key control is used.
Defines the VID (Vendor ID) and PID (Product ID) of the USB device that is assigned to the USB port via the device assignment.
Often VID and PID of a USB device are unknown. We recommend configuration via the myUTN Control Center because VID and PID will be automatically determined and entered with this method.
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Table 33: Parameter list – Authentication
Parameters auth_typ
[Authentication method]
Value
---
MD5
TLS
TTLS
PEAP
FAST
Default
--auth_name
[User name] auth_pwd
[Password] auth_extern
[PEAP/EAP-FAST options] auth_ano_name
[Anonymous name] auth_wpa_addon
[WPA Add on] max. 64 characters
[a–z, A–Z, 0–9] max. 64 characters
[a–z, A–Z, 0–9]
[blank]
--auth_intern
[Inner authentication]
---
PAP
CHAP
MSCHAP2
EMD5
ETLS
---
PLABEL0
PLABEL
PVER0
PVER1
FPROV1 max. 64 characters
[a–z, A–Z, 0–9]
[blank]
---
[blank] max. 255 characters
[a–z, A–Z, 0–9]
[blank]
Appendix
Description
Defines the authentication method used in your network in which the UTN server is to partici pate.
--- = none
MD5= EAP-MD5
TLS = EAP-TLS
TTLS= EAP-TTLS
PEAP= PEAP
FAST= EAP-FAST
Defines the user name with which the UTN server is set up on the RADIUS server for the EAP authentication methods MD5, TTLS, PEAP, and
FAST.
Defines the password with which the UTN server is set up on the RADIUS server for the EAP authentication methods MD5, TTLS, PEAP, and
FAST.
Defines the kind of inner authentication for the
EAP authentication methods TTLS, PEAP, and
FAST.
---
PAP
= none
= PAP
CHAP = CHAP
MSCHAP2= MS-CHAPv2
EMD5 = EAP-MD5
ETLS = EAP-TLS
Defines the kind of external authentication for the EAP authentication methods TTLS, PEAP, and FAST.
--= none
PLABEL0= PEAPLABEL0
PLABEL1= PEAPLABEL1
PVER0 = PEAPVER0
PVER1 = PEAPVER1
FPROV1= FASTPROV1
Defines the anonymous name for the unen crypted part of the EAP authentication methods
TTLS, PEAP, and FAST.
Defines an optional WPA expansion for the EAP authentication methods TTLS, PEAP, and FAST.
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Table 34: Parameter list – Miscellaneous
Parameters utn_heartbeat
Value
1–1800
[1–4 characters; 0–
9]
Default
180 utn_poffdura_1
~ utn_poffdura_20 utn_prereset_1
~ utn_prereset_20
0–100
[1–3 characters;
0–9] on/off
0 off
Appendix
Description
WARNING
This parameter can only be used after consultation with the SEH support team.
WARNING
This parameter can only be used after consultation with the SEH support team.
WARNING
This parameter can only be used after consultation with the SEH support team.
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8.4 SEH UTN Manager – Feature Overview
Which features are inactive (grayed out) in the SEH UTN Manager depends on different factors:
• Selection list mode
- global
- user
• Client operating system (Windows, macOS, Linux)
• Client user account
- administrator or group members of 'utnusers'
- standard user or users which are not members of the group 'utnusers'
• Write access to the *.ini file (selection list)
The administrator can use these factors to provide users with individual functions.
Appendix
The following table gives an overview. It shows the features that are basically available. In addition, individual fea tures will not be displayed or will be displayed as inactive because
• the UTN server model does not support them
• the USB device connected does not support them
• security measures have been implemented
Table 35: SEH UTN Manager – Feature overview Linux
Global Selection List
Administrator
User
Administr ator
User Selection List
User (read/ write *.ini)
User
(no read/ write *.ini)
Menu
Selection List – Edit
Selection List – Export
Selection List – Refresh
UTN Server – Configure
UTN Server – Set IP Address
UTN-Server – Activate Auto-Connect
USB Server – Set USB Port Keys
UTN Server – Add
UTN Server – Remove
UTN Server – Refresh
Port – Activate
Port – Deactivate
Port – Request
Port – Remove
Port – Settings
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Buttons
Selection List – Refresh
Selection List – Edit
Port – Activate
Port – Deactivate
'Program – Options' dialog
Network Scan – Multicast Search
Network Scan – IP Range Search
Program – Program Messages
Program – Program Update
Automatisms – Auto-Disconnect
Selection List – Selection List Mode
Selection List –
Automatic Refresh
'Port Settings' dialog
Messages
Appendix
Global Selection List
Administrator
User
Administr ator
User Selection List
User (read/ write *.ini)
User
(no read/ write *.ini)
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8.5 Index
A
Administration
Automatisms
B
C
CA (certification authority) 66
requested 66 self-signed 66 view 66
certificate
106
Connection
encryption 58 myUTN Control Center 58
D
Device
contact person 33 description 33
DHCP (Dynamic Host Configuration Protocol) 20
Documentation 3 further applicable documents 3 mark-ups 3 symbols 3
E
EAP (Extensible Authentication Protocol) 71
FAST (Flexible Authentication via Secure Tunnel ing) 73
PEAP (Protected Extensible Authentication Proto col) 73
TLS (Transport Layer Security) 72
TTLS (Tunneled Transport Layer Security) 72
myUTN User Manual Linux
USB connection 59 web access 59
F
File ’<Default-Name_parameter.txt>’ 77
Further applicable documents 3
G
H
HID (Human Interface Device) 65 blocking 65
I
IP address
107
IPv4
L
M
N
O
P
myUTN User Manual Linux
PKI (public key infrastructures) 66
POP3 (Post Office Protocol Version 3) 27
Q
R
Reset 78 button 78 remote access 78 reset button 78
S
without graphical user interface 50
108
Selection list
Settings
SMTP (Simple Mail Transfer Protocol) 27
SNMP
SNMP (Simple Network Management Protocol) 25 password 25
SNTP (Simple Network Time Protocol) 32
SSL (Secure Sockets Layer) 56, 58, 59
T
TCP port access control 62 exception 62 test mode 62
TLS (Transport Layer Security) 56, 58, 59
U
automate 44 automatic 44 automatic disconnect 44
myUTN User Manual Linux
USB data transfer
USB device
automatic connection 44 automatic disconnect 44 automatisms 44
HID (Human Interface Device) 65
USB port
automatic connection 44 automatic disconnect 44
User account 61 administrator 61 read-only user 61
V
VLAN (Virtual Local Area Network) 29
W
Z
109
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