Sophos Anti-Virus detects and deals with viruses (including worms and Trojans) on your Linux computer. As well as being able to detect all Linux viruses, it can also detect all non-Linux viruses that might be stored on your Linux computer and transferred to non-Linux computers. It does this by scanning your computer.

2.2 How Sophos Anti-Virus protects your computer

On-access scanning is your main method of protection against viruses. Whenever you access

(copy, save, or open) a file, Sophos Anti-Virus scans the file and grants access to it only if it does not pose a threat to your computer.

In addition to on-access scanning, Sophos Anti-Virus enables you to run an on-demand scan to provide additional protection. An on-demand scan is a scan that you initiate.You can scan anything from a single file to everything on your computer that you have permission to read. You can either manually run an on-demand scan or schedule it to run unattended.

2.3 How you use Sophos Anti-Virus

Sophos Anti-Virus has two types of user interface:

■

Command-line interface (CLI)

■

Web user interface (web UI)

Use the interface that you prefer but note that you can use the web UI to perform only certain tasks, listed below.

For tasks that you can perform using either interface, this document explains both methods, in subsections headed either CLI or Web UI, respectively.

2.3.1 Command-line interface (CLI)

The command-line interface enables you to perform all tasks. It is the only way to run on-demand scans and configure updating.

Note: You must be logged on to the computer as root to use all commands except

savscan

, which is used to run on-demand scans.

This document assumes that you have installed Sophos Anti-Virus in the default location,

/opt/sophos-av

. The paths of the commands described are based on this location.

Sophos Anti-Virus for Linux

2.3.2 Web user interface (web UI)

The web user interface enables you to:

■

Check that on-access scanning is active.

■

Start and stop on-access scanning.

Configure on-access scanning inside archives.

■

Configure what is excluded from on-access scanning.

Configure alerts.

View the Sophos Anti-Virus log.

Configure on-access cleanup.

To run on-demand scans and configure updating, you must use the CLI.

Note: Although the web UI can be run by the root user (as well as other users), it does not run with root privileges. It cannot therefore access all files on the computer.

To use the web UI

1. Point a web browser to

http://localhost:8081

The browser displays the Home tab of the web UI.

configuration guide

2. When you click another tab, the browser asks you for credentials so that you can use the web

UI to configure Sophos Anti-Virus.

To find out your username, either ask your system administrator or, at a command prompt, type:

/opt/sophos-av/bin/savconfig query HttpUsername

Note: To find out your username in this way, you must be logged on to the computer as root.

To find out your password, ask your system administrator.

2.4 How you configure Sophos Anti-Virus

If your Linux computers are managed by Sophos Enterprise Console, configure Sophos Anti-Virus as follows:

■

Configure on-access scanning, scheduled scans, alerting, logging, and updating centrally from Enterprise Console. For information, see the Enterprise Console Help.

Note: These features also include some parameters that cannot be set using Enterprise

Console.You can set these parameters from the Sophos Anti-Virus CLI on each Linux computer locally. Enterprise Console ignores them.

■

Configure on-demand scans and the web user interface from the Sophos Anti-Virus CLI on each Linux computer locally.

If you have a network of Linux computers that is not managed by Enterprise Console, configure

Sophos Anti-Virus as follows:

■

Configure on-access scanning, scheduled scans, alerting, logging, updating, and the

web user interface centrally by editing a configuration file from which the computers update.

See

Appendix: Extra Files configuration

(page 30).

Configure on-demand scans from the Sophos Anti-Virus CLI on each computer locally.

Note: Do not use Extra Files configuration unless technical support advises you to do so, or you cannot use Enterprise Console.You cannot use Enterprise Console configuration and Extra Files configuration together.

If you have a standalone Linux computer that is not managed by Enterprise Console, configure

Sophos Anti-Virus as follows:

■

Configure on-access scanning, scheduled scans, alerting, logging, updating, and the

web user interface from the Sophos Anti-Virus CLI or web UI.

Configure on-demand scans from the Sophos Anti-Virus CLI.

Sophos Anti-Virus for Linux

3 On-access scanning

On-access scanning is your main method of protection against viruses. Whenever you access

(copy, save, or open) a file, Sophos Anti-Virus scans the file and grants access to it only if it does not pose a threat to your computer.

3.1 Check that on-access scanning is active

3.1.1 CLI

■

To check that on-access scanning is active, type:

/opt/sophos-av/bin/savdstatus

3.1.2 Web UI

■

To check that on-access scanning is active, look at the Status panel.

3.2 Check on-access scanning will be started automatically on system boot

3.2.1 CLI

To perform this procedure, you must be logged on to the computer as root.

1. Check that

savd

will be started automatically on system boot:

chkconfig --list

Note: If this command does not work on your Linux distribution, use the appropriate utility to display services that are configured to start on system boot.

If the list contains an entry for sav-protect with 2:on, 3:on, 4:on and 5:on, on-access scanning will be started automatically on system boot.

Otherwise, type:

/opt/sophos-av/bin/savdctl enableOnBoot savd

configuration guide

2. Check that on-access scanning will be started automatically with

savd

/opt/sophos-av/bin/savconfig query EnableOnStart

If the command returns true

, on-access scanning will be started automatically with

savd

on system boot.

Otherwise, type:

/opt/sophos-av/bin/savconfig set EnableOnStart true

3.2.2 Web UI

■

To check on-access scanning will be started automatically on system boot, on the Control tab, check the Startup panel.

If the Start on-access scanning on system boot check box is selected, on-access scanning will be started automatically on system boot.

3.3 Start on-access scanning

3.3.1 CLI

To start on-access scanning, do one of the following:

■

Type:

/opt/sophos-av/bin/savdctl enable

■

Use the appropriate tool to start the installed service sav-protect. For example, type:

/etc/init.d/sav-protect start

service sav-protect start

3.3.2 Web UI

■

To start on-access scanning, on the Control tab, in the Control panel, click Enable On-access

Scanning.

3.4 Stop on-access scanning

Important: If you stop on-access scanning, Sophos Anti-Virus does not scan files that you access for viruses. This puts your computer, and others to which it is connected, at risk.

3.4.1 CLI

■

To stop on-access scanning, type:

Sophos Anti-Virus for Linux

/opt/sophos-av/bin/savdctl disable

3.4.2 Web UI

■

To stop on-access scanning, on the Control tab, in the Control panel, click Disable On-access

Scanning.

configuration guide

4 On-demand scanning

An on-demand scan is a scan that you initiate. You can scan anything from a single file to everything on your computer that you have permission to read. You can either manually run an on-demand scan or schedule it to run unattended.

To schedule an on-demand scan, see

Appendix: Configuring scheduled scans (page 37).

4.1 Running on-demand scans

The command that you type to run an on-demand scan is

savscan

4.1.1 Scan the computer

■

To scan the computer, type:

savscan /

Note: You can also use Sophos Enterprise Console to run a full scan on one or more computers.

For details, see the Enterprise Console Help.

4.1.2 Scan a particular directory or file

■

To scan a particular directory or file, specify the path of the item. For example, type:

savscan /usr/mydirectory/myfile

You can type more than one directory or file in the same command.

4.1.3 Scan a filesystem

■

To scan a filesystem, specify its name. For example, type:

savscan /home

You can type more than one filesystem in the same command.

4.1.4 Scan a boot sector

To scan a boot sector, log in as superuser. This grants you sufficient permission to access the disk devices.

You can scan the boot sector of a logical or physical drive.

■

To scan the boot sector of specific logical drives, type:

savscan -bs=drive, drive, ... where drive is the name of a drive, for example

/dev/fd0

/dev/hda1

Sophos Anti-Virus for Linux

■

To scan the boot sector of all logical drives that Sophos Anti-Virus recognises, type:

savscan -bs

■

To scan the master boot record of all fixed physical drives on the computer, type:

savscan -mbr

4.2 Configuring on-demand scans

In this section, where path appears in a command, it refers to the path to be scanned.

To see a full list of the options that you can use with an on-demand scan, type:

man savscan

4.2.1 Scan all file types

By default, Sophos Anti-Virus scans only executables. To see a full list of the file types that Sophos

Anti-Virus scans by default, type

savscan -vv

■

To scan all file types, not just those that are scanned by default, use the option -all. Type:

savscan path -all

Note: This makes scanning take longer, can compromise performance on servers, and can cause false virus reports.

4.2.2 Scan a particular file type

By default, Sophos Anti-Virus scans only executables. To see a full list of the file types that Sophos

Anti-Virus scans by default, type

savscan -vv

■

To scan a particular file type, use the option -ext with the appropriate filename extension. For example, to scan files that have the filename extension

.txt

, type:

savscan path -ext=txt

■

To disable scanning of a particular file type, use the option -next with the appropriate filename extension.

Note: To specify more than one file type, separate each filename extension with a comma.

4.2.3 Scan inside all archive types

You can configure Sophos Anti-Virus to scan inside all archive types. To see a list of these archive types, type

savscan -vv

■

To scan inside all archive types, use the option -archive. Type:

savscan path -archive

Archives that are “nested” within other archives (for example, a TAR archive within a ZIP archive) are scanned recursively.

configuration guide

If you have numerous complex archives, the scan may take longer to run. Bear this in mind when scheduling unattended scans.

4.2.4 Scan inside a particular archive type

You can configure Sophos Anti-Virus to scan inside a particular archive type. To see a list of these archive types, type

savscan -vv

■

To scan inside a particular archive type, use the option that is shown in the list. For example, to scan inside TAR and ZIP archives, type:

savscan path -tar -zip

Archives that are “nested” within other archives (for example, a TAR archive within a ZIP archive) are scanned recursively.

If you have numerous complex archives, the scan may take longer to run. Bear this in mind when scheduling unattended scans.

4.2.5 Scan remote computers

By default, Sophos Anti-Virus does not scan items on remote computers (that is, does not traverse remote mount points).

■

To scan remote computers, use the option --no-stay-on-machine. Type:

savscan path --no-stay-on-machine

4.2.6 Turn off scanning of symbolically linked items

By default, Sophos Anti-Virus scans symbolically linked items.

■

To turn off scanning of symbolically linked items, use the option --no-follow-symlinks. Type:

savscan path --no-follow-symlinks

To avoid scanning items more than once, use the option --backtrack-protection.

4.2.7 Scan the starting filesystem only

Sophos Anti-Virus can be configured not to scan items that are beyond the starting filesystem

(that is, not to traverse mount points).

■

To scan the starting filesystem only, use the option --stay-on-filesystem. Type:

savscan path --stay-on-filesystem

4.2.8 Excluding items from scanning

You can configure Sophos Anti-Virus to exclude particular items (files, directories, or filesystems) from scanning by using the option -exclude. Sophos Anti-Virus excludes any items that follow the option in the command string. For example, to scan items fred

and harry

, but not tom

or peter

, type:

Sophos Anti-Virus for Linux

savscan fred harry -exclude tom peter

You can exclude directories or files that are under a particular directory. For example, to scan all of Fred’s home directory, but exclude the directory games

(and all directories and files under it), type:

savscan /home/fred -exclude /home/fred/games

You can also configure Sophos Anti-Virus to include particular items that follow the option -include.

For example, to scan items fred

, harry

, and bill

, but not tom

or peter

, type:

savscan fred harry -exclude tom peter -include bill

4.2.9 Scan file types that UNIX defines as executables

By default, Sophos Anti-Virus does not scan file types that UNIX defines as executables.

■

To scan file types that UNIX defines as executables, use the option --examine-x-bit. Type:

savscan path --examine-x-bit

Sophos Anti-Virus still scans files that have filename extensions that are in its own list as well.

To see a list of these filename extensions, type

savscan -vv

configuration guide

5 What happens if viruses are detected

Regardless of whether viruses are detected by on-access scanning or an on-demand scan, by default Sophos Anti-Virus:

■

Logs the event in syslog and the Sophos Anti-Virus log (see View the Sophos Anti-Virus log

(page 24)).

■

Sends an alert to Enterprise Console if it is being managed by Enterprise Console.

Sends an email alert to root@localhost.

By default, Sophos Anti-Virus also displays alerts according to whether the viruses were detected by on-access scanning or an on-demand scan, as explained below.

On-access scanning

If on-access scanning detects a virus, Sophos Anti-Virus denies access to the file and by default displays a desktop pop-up alert like the one shown below.

If the desktop pop-up alert cannot be displayed, a command-line alert is displayed instead.

For information about cleaning up viruses, see

Cleaning up viruses (page 21).

On-demand scans

If an on-demand scan detects a virus, by default Sophos Anti-Virus displays a command-line alert. It reports the virus on the line which starts with

>>>

followed by either

Virus

Fragment

SAVScan virus detection utility

Version 4.69.0 [Linux/Intel]

Virus data version 4.69

Sophos Anti-Virus for Linux

Includes detection for 2871136 viruses, Trojans and worms

System time 13:43:32, System date 22 September 2012

IDE directory is: /opt/sophos-av/lib/sav

Using IDE file nyrate-d.ide

. . . . . . . . . . . . . .

Using IDE file injec-lz.ide

Quick Scanning

>>> Virus 'EICAR-AV-Test' found in file /usr/mydirectory/eicar.src

33 files scanned in 2 seconds.

1 virus was discovered.

1 file out of 33 was infected.

Please send infected samples to Sophos for analysis.

For advice consult www.sophos.com or email [email protected]

End of Scan.

For information about cleaning up viruses, see

Cleaning up viruses (page 21).

configuration guide

6 Cleaning up viruses

6.1 Get cleanup information

If viruses are reported, you can get information and cleanup advice from the Sophos website.

To get cleanup information:

1. Go to the security analyses page

( http://www.sophos.com/en-us/threat-center/threat-analyses/viruses-and-spyware.aspx

2. Search for the analysis of the virus, by using the name that was reported by Sophos Anti-Virus.

6.2 Quarantining infected files

You can configure an on-demand scan to put infected files into quarantine to prevent them from being accessed. It does this by changing the ownership and permissions for the files.

Note: If you specify disinfection (see

Cleaning up infected files

(page 22)) as well as quarantining,

Sophos Anti-Virus attempts to disinfect infected items and quarantines them only if disinfection fails.

In this section, where path appears in a command, it refers to the path to be scanned.

6.2.1 Specify quarantining

■

To specify quarantining, use the option --quarantine. Type:

savscan path --quarantine

6.2.2 Specifying the ownership and permissions that are applied

By default, Sophos Anti-Virus changes:

■

The user ownership of an infected file to the user running Sophos Anti-Virus.

■

The group ownership of the file to the group to which that user belongs.

■

The file permissions to

-r--------

(0400).

If you prefer, you can change the user or group ownership and file permissions that Sophos

Anti-Virus applies to infected files. You do so by using these parameters: uid=nnn user=username gid=nnn group=group-name mode=ppp

Sophos Anti-Virus for Linux

You cannot specify more than one parameter for user ownership or for group ownership. For example, you cannot specify a uid and a user.

For each parameter that you do not specify, the default setting (as given earlier) is used.

For example:

savscan fred --quarantine:user=virus,group=virus,mode=0400

changes an infected file’s user ownership to “virus”, the group ownership to “virus”, and the file permissions to

-r--------

. This means that the file is owned by the user “virus” and group

“virus”, but only the user “virus” can access the file (and only for reading). No-one else (apart from root) can do anything to the file.

You may need to be running as a special user or as superuser to set the ownership and permissions.

6.3 Cleaning up infected files

You can configure an on-demand scan to clean up (disinfect or delete) infected files. Any actions that Sophos Anti-Virus takes against infected files are listed in the scan summary and logged in the Sophos Anti-Virus log. By default, cleanup is disabled.

In this section, where path appears in a command, it refers to the path to be scanned.

6.3.1 Disinfect a specific infected file

■

To disinfect a specific infected file, use the option -di. Type:

savscan path -di

Sophos Anti-Virus asks for confirmation before it disinfects.

Note: Disinfecting an infected document does not repair any changes the virus has made to

the document. (See Get cleanup information

(page 21) to find out how to view details on the

Sophos website of the virus’s side-effects.)

6.3.2 Disinfect all infected files on the computer

■

To disinfect all infected files on the computer, type:

savscan / -di

Sophos Anti-Virus asks for confirmation before it disinfects.

Note: Disinfecting an infected document does not repair any changes the virus has made to

the document. (See Get cleanup information

(page 21) to find out how to view details on the

Sophos website of the virus’s side-effects.)

6.3.3 Delete a specific infected file

■

To delete a specific infected file, use the option -remove. Type:

savscan path -remove

configuration guide

Sophos Anti-Virus asks for confirmation before it deletes.

6.3.4 Delete all infected files on the computer

■

To delete all infected files on the computer, type:

savscan / -remove

Sophos Anti-Virus asks for confirmation before it deletes.

6.3.5 Disinfect an infected boot sector

■

To disinfect an infected boot sector, use the disinfection option -di and the boot sector option

-bs. For example, type:

savscan -bs=/dev/fd0 -di

where

/dev/fd0

is the name of the drive that contains the infected boot sector.

Sophos Anti-Virus asks for confirmation before it disinfects.

6.4 Recovering from virus side-effects

Recovery from virus infection depends on how the virus infected the computer. Some viruses leave you with no side-effects to deal with; others may have such extreme side-effects that you have to restore a hard disk in order to recover.

Some viruses gradually make minor changes to data. This type of corruption can be hard to detect.

It is therefore very important that you read the virus analysis on the Sophos website, and check documents carefully after disinfection.

Sound backups are crucial. If you did not have them before you were infected, start keeping them in case of future infections.

Sometimes you can recover data from disks damaged by a virus. Sophos can supply utilities for repairing the damage caused by some viruses. Contact Sophos technical support for advice.

Sophos Anti-Virus for Linux

7 View the Sophos Anti-Virus log

Sophos Anti-Virus logs details of scanning activity in the Sophos Anti-Virus log and syslog. In addition, virus and error events are logged in the Sophos Anti-Virus log.

7.1 CLI

■

To view the Sophos Anti-Virus log, use the command

savlog

. This can be used with various options to restrict the output to certain messages and to control the display.

For example, to display all messages logged to the Sophos Anti-Virus log in the last 24 hours, and to display the date and time in UTC/ISO 8601 format, type:

/opt/sophos-av/bin/savlog --today --utc

■

To see a complete list of the options that can be used with

savlog

, type:

man savlog

7.2 Web UI

■

To view the Sophos Anti-Virus log, on the Log Viewer tab, in the Log selection panel, use the text boxes and option buttons to specify the messages that you want to display. Then click

View Log.

The messages are displayed in the Log Contents panel.

configuration guide

8 Update Sophos Anti-Virus immediately

Provided that you have enabled auto-updating, Sophos Anti-Virus is kept updated automatically.

However, you can also update Sophos Anti-Virus immediately, without waiting for the next automatic update.

■

To update Sophos Anti-Virus immediately, at the computer that you want to update, type:

/opt/sophos-av/bin/savupdate

Note: You can also update computers immediately from Sophos Enterprise Console.

Sophos Anti-Virus for Linux

9 About kernel support

Note: This section is only applicable if you are using Talpa as your on-access scanning interception

method. For more information, see Change the on-access scanning file interception method (page

53).

9.1 About support for new kernel releases

When one of the Linux vendors supported by Sophos Anti-Virus releases an update to its Linux kernel, Sophos releases an update to the Sophos kernel interface module (Talpa) to support this.

If you apply a Linux kernel update before you apply the matching Talpa update, Sophos Anti-Virus initiates a local compilation of Talpa. If this fails, Sophos Anti-Virus tries to use Fanotify as the interception method instead. If Fanotify is also unavailable, on-access scanning is stopped and an error is reported.

To avoid this problem, you must confirm that the matching Talpa update has been released before applying the Linux kernel update. A list of supported Linux distributions and updates is available in Sophos support knowledgebase article 14377

( http://www.sophos.com/en-us/support/knowledgebase/14377.aspx

). When the required Talpa update is listed, it is available for download. Provided that you have enabled auto-updating, Sophos

Anti-Virus downloads the update automatically. Alternatively, to update Sophos Anti-Virus immediately, without waiting for the next automatic update, type:

/opt/sophos-av/bin/savupdate

You can then apply the Linux kernel update.

9.2 About support for customized kernels

If you customize your Linux kernels, this manual does not explain how to configure updating to support this. See Sophos support knowledgebase article 13503

( http://www.sophos.com/en-us/support/knowledgebase/13503.aspx

configuration guide

10 Configure the web UI

Note: If you are configuring a single computer that is on a network, the configuration might be overwritten if the computer downloads a new Extra Files configuration.

To configure the web UI:

1. At the computer that is running the web UI, type:

/opt/sophos-av/bin/savsetup savsetup

asks you to select what you want to do.

2. Select Sophos Anti-Virus GUI configuration.

savsetup

asks you a series of questions about the web UI. Type your responses to configure the web UI.

Sophos Anti-Virus for Linux

11 Appendix: On-demand scan return codes

savscan

returns a code to the shell that indicates the result of the scan. You can view the code by entering a further command after the scan has finished, for example:

echo $?

Return code Description

No errors occur and no viruses are detected

The user interrupts the scan by pressing CTRL+C

An error occurs that prevents further execution of a scan

A virus is detected 3

11.1 Extended return codes

savscan

returns a more detailed code to the shell if you run it with the -eec option. You can view the code by entering a further command after the scan has finished, for example:

echo $?

Extended return code Description

No errors occur and no viruses are detected

A survivable error occurs

A password-protected file is found (it is not scanned)

An item containing a virus is detected and disinfected

Extended return code

40 configuration guide

Description

An item containing a virus is found and not disinfected

A virus is detected in memory

An integrity check failure occurs

An unsurvivable error occurs

The scan is interrupted

Sophos Anti-Virus for Linux

12 Appendix: Extra Files configuration

This section describes how to configure Sophos Anti-Virus with Extra Files configuration.

12.1 About Extra Files configuration

This section gives you an overview of Extra Files configuration.

12.1.1 What is Extra Files configuration?

Extra Files configuration is a method of configuring Sophos Anti-Virus for Linux. It is an alternative to configuration from Sophos Enterprise Console and it does not require a Windows computer.

You should use this method only if you cannot use Enterprise Console.

Note: You cannot use Enterprise Console configuration and Extra Files configuration together.

You can use this method to configure all features of Sophos Anti-Virus except on-demand scans,

for which you should see Configuring on-demand scans

(page 16)

12.1.2 How do you use Extra Files configuration?

You create a file that contains the Extra Files configuration settings. This file is offline, so that other computers cannot access it.

When you are ready to configure your computers, you copy the offline file to a live configuration file, which is in a location that endpoint computers can access. You configure each endpoint computer to fetch its configuration from the live file when that computer updates.

To reconfigure endpoint computers, you update the offline configuration file, and copy it to the live configuration file again.

Notes:

■

To ensure that the configuration file is secure, you must create and use security certificates, as described in the following sections.

You can lock part or all of the configuration so that individual end-users cannot modify it on their computer.

The following sections tell you how to create and use Extra Files configuration files.

12.2 Using Extra Files configuration

To use Extra Files, you:

■

Create security certificates on the server.

configuration guide

■

Create an Extra Files configuration.

Install the root certificate on endpoint computers.

Enable endpoint computers to use the Extra Files configuration.

12.2.1 Create security certificates on the server

You create the security certificates as follows.

Note: If you use OpenSSL to generate certificates, you must be running OpenSSL 0.9.8 or later.

1. Fetch the script that you will use to create the certificates. The script is available from Sophos support knowledgebase article 119602 .

2. Run the script to create a set of certificates. For example, type:

./create_certificates.sh /root/certificates

You can specify a different directory in which to place the certificates. However, you must ensure that the certificates are in a secure location.

3. When prompted, enter and confirm a root key password.

4. When prompted, enter and confirm a signing key password.

5. Check that the certificates are in the directory. Type:

ls /root/certificates/

You should see these files:

extrafiles-root-ca.crt extrafiles-root-ca.key extrafiles-signing.cnf

extrafiles-signing.crt extrafiles-signing.key

Sophos Anti-Virus for Linux

12.2.2 Create an Extra Files configuration

1. On the computer where you want to store the Extra Files configuration, use the command

savconfig

to create the offline configuration file and set the values of parameters in that file.

Use the following syntax:

/opt/sophos-av/bin/savconfig -f offline-config-file-path -c operation

parameter value

where:

■

-f offline-config-file-path specifies the path of the offline configuration file, including the filename.

savconfig

creates the file for you.

■

-c indicates that you want to access the Corporate layer of the offline file (for more information about layers, see

About configuration layers

(page 34)).

operation is either set, update, add, remove, or delete.

parameter is the parameter that you want to set.

■

value is the value to which you want to set the parameter.

For example, to create a file called

OfflineConfig.cfg

in the directory

/rootconfig

/ and to disable email alerts, type:

/opt/sophos-av/bin/savconfig -f /root/config/OfflineConfig.cfg -c set

EmailNotifier Disabled

For information about using

savconfig

, see

savconfig configuration command (page 35).

2. To view the parameter values, use the query operation.You can view the value of an individual parameter or all parameters. For example, to view the values of all the parameters that you have set, type:

/opt/sophos-av/bin/savconfig -f /root/config/OfflineConfig.cfg -c query

3. When you have finished setting parameters in the offline configuration file, create either a web share or a shared directory for storing the live configuration file.

4. Create the live configuration file by using the command

addextra

. Use the following syntax:

/opt/sophos-av/update/addextra offline-config-file-path

live-config-file-path --signing-key=signing-key-file-path

--signing-certificate=signing-certificate-file-path

For example:

/opt/sophos-av/update/addextra /opt/sophos-av/OfflineConfig.cfg

/var/www/extrafiles/ --signing-key=

/root/certificates/extrafiles-signing.key

--signing-certificate=/root/certificates/extrafiles-signing.crt

configuration guide

12.2.3 Install the root certificate on endpoint computers

You must install the root certificate on each endpoint computer.

1. At the computer where you created the certificates (or the computer to which you copied them), create a new directory for the root certificate. Type:

mkdir rootcert cd rootcert/

2. Copy the root certificate to the new directory. Type:

cp /root/certificates/extrafiles-root-ca.crt .

3. Copy the new directory to a shared directory.

4. Go to each endpoint computer and mount the shared directory.

5. Install the certificate. Use the following syntax:

/opt/sophos-av/update/addextra_certs --install=

shared-rootcert-directory

For example:

/opt/sophos-av/update/addextra_certs --install= /mnt/rootcert/

12.2.4 Enable endpoint computers to use the Extra Files configuration

You enable the endpoint computers to download and use the configuration as follows.

1. If your live configuration file is in a shared directory, mount that directory on each client computer.

2. On each endpoint computer, specify the path of the live configuration file.

For example:

/opt/sophos-av/bin/savconfig set ExtraFilesSourcePath http://www.example.com/extrafiles

The new configuration is now available for the client computers to download the next time that they update.

3. To run an update now, type:

/opt/sophos-av/bin/savupdate

12.3 Updating Extra Files configuration

1. On the computer where the Extra Files configuration is stored, use the command

savconfig

to update the offline configuration file and set the values of parameters in that file.

You can use the same syntax as you did when creating the offline configuration file.

For example, to update a file called

OfflineConfig.cfg

in the directory

/opt/sophos-av and to enable email alerts, type:

/opt/sophos-av/bin/savconfig -f /opt/sophos-av/OfflineConfig.cfg -c set EmailNotifier Enabled

Sophos Anti-Virus for Linux

/opt/sophos-av/bin/savconfig -f /opt/sophos-av/OfflineConfig.cfg -c query

3. When you have finished setting parameters in the offline configuration file, update the live configuration file by using the command

addextra

. Use the following syntax:

/opt/sophos-av/update/addextra offline-config-file-path

live-config-file-path --signing-key=signing-key-file-path

--signing-certificate=signing-certificate-file-path

For example:

/opt/sophos-av/update/addextra /opt/sophos-av/OfflineConfig.cfg

/var/www/extrafiles/ --signing-key=

/root/certificates/extrafiles-signing.key

--signing-certificate=/root/certificates/extrafiles-signing.crt

The updated configuration is now available for the client computers to download the next time that they update.

4. To run an update now, type:

/opt/sophos-av/bin/savupdate

12.4 About configuration layers

Each installation of Sophos Anti-Virus includes a local configuration file, which includes settings for all features of Sophos Anti-Virus apart from on-demand scans.

Each local configuration file contains a number of layers:

■

Sophos: This is always present in the file. It includes the factory settings, which are changed only by Sophos.

Corporate: This is present if the installation is configured using Extra Files configuration.

■

User: This is present if any local configuration is performed. It includes settings that apply only to the installation on this computer.

Each layer uses the same parameters, so that the same parameter can be set in more than one layer. However, when Sophos Anti-Virus checks the value of a parameter, it does so according to the layer hierarchy:

■

By default, Corporate layer overrides User layer.

Corporate and User layers override Sophos layer.

For example, if a parameter is set in the User layer and the Corporate layer, the value in the

Corporate layer is used. Nevertheless, you can unlock the values of individual parameters in the

Corporate layer, so that they can be overridden.

When the local configuration file is updated from the Extra Files configuration file, the Corporate layer in the local file is replaced by that of the Extra Files configuration file.

configuration guide

12.5 savconfig configuration command

savconfig

is the command that you use to configure all features of Sophos Anti-Virus apart from on-demand scanning. The path of the command is

/opt/sophos-av/bin

. Using the command to configure specific functions of Sophos Anti-Virus is explained in the remainder of this manual. The rest of this subsection explains the syntax.

The syntax of

savconfig

is:

savconfig [option] ... [operation] [parameter] [value] ...

To view a complete list of the options, operations, and parameters, type:

man savconfig

12.5.1 option

You can specify one or more options. The options are mainly associated with the layers in the local configuration files in each installation. By default, the command accesses the User layer. If you want to access the Corporate layer for example, use the option -c or --corporate.

By default, the values of parameters in the Corporate layer are locked, so that they override values in the User layer. If you want to allow a corporate setting to be overridden by users, use the option

--nolock. For example, to set the value of LogMaxSizeMB and allow it to be overridden, type:

/opt/sophos-av/bin/savconfig --nolock -f corpconfig.cfg -c LogMaxSizeMB

If you are using Enterprise Console, you can display just the values of the anti-virus policy parameters by using the option --consoleav. Type:

/opt/sophos-av/bin/savconfig --consoleav query

You can display just the values of the Enterprise Console update policy by using the option

--consoleupdate. Type:

/opt/sophos-av/bin/savconfig --consoleupdate query

12.5.2 operation

You can specify one operation. The operations are mainly associated with how you want to access a parameter. Some parameters can have only one value but others can have a list of values. The operations enable you to add values to a list or remove values from a list. For example, the Email parameter is a list of email recipients.

To display the values of parameters, use the operation query. For example, to display the value of the EmailNotifier parameter, type:

/opt/sophos-av/bin/savconfig query EmailNotifier

If you are using Enterprise Console, when

savconfig

returns values of parameters, those that conflict with the relevant Enterprise Console policy are clearly marked with the word “Conflict”.

Sophos Anti-Virus for Linux

12.5.3 parameter

You can specify one parameter. To list all the basic parameters that can be set, type:

/opt/sophos-av/bin/savconfig -v

Some parameters require secondary parameters to be specified as well.

12.5.4 value

You can specify one or more values that will be assigned to a parameter. If a value contains spaces, you must enclose it in single quotation marks.

configuration guide

13 Appendix: Configuring scheduled scans

Sophos Anti-Virus can store definitions of one or more scheduled scans.

Note: You can also use Enterprise Console or the command

crontab

to scan computers at set times. For details, see the Enterprise Console Help or Sophos support knowledgebase article

12176 ( http://www.sophos.com/en-us/support/knowledgebase/12176.aspx

), respectively. Scheduled scans that have been added using Enterprise Console have names that are prefixed with “SEC:” and cannot be updated or removed except by using Enterprise Console.

13.1 Add a scheduled scan from a file

1. To use a template scan definition as a starting point, open

/opt/sophos-av/doc/namedscan.example.en

To create a scan definition from scratch, open a new text file.

2. Define what to scan, when to scan it, and any other options, using only the parameters listed in the template.

To schedule the scan, you must include at least one day and one time.

3. Save the file in a location of your choosing, being careful not to overwrite the template.

4. Add the scheduled scan to Sophos Anti-Virus using the command

savconfig

with the operation add and the parameter NamedScans. Specify the name of the scan and the path of the scan definition file.

For example, to add the scan Daily, which is stored in

/home/fred/DailyScan

, type:

/opt/sophos-av/bin/savconfig add NamedScans Daily /home/fred/DailyScan

13.2 Add a scheduled scan from standard input

1. Add the scheduled scan to Sophos Anti-Virus using the command

savconfig

with the operation add and the parameter NamedScans. Specify the name of the scan and use a hyphen to specify that the definition is to be read from standard input.

For example, to add the scan Daily, type:

/opt/sophos-av/bin/savconfig add NamedScans Daily -

When you press ENTER, Sophos Anti-Virus waits for you to type the definition of the scheduled scan.

2. Define what to scan, when to scan it, and any other options, using only the parameters listed in the template scan definition:

/opt/sophos-av/doc/namedscan.example.en

. After typing each parameter and its value, press ENTER.

To schedule the scan, you must include at least one day and one time.

3. To complete the definition, press CTRL+D.

Sophos Anti-Virus for Linux

13.3 Export a scheduled scan to a file

■

To export a scheduled scan from Sophos Anti-Virus to a file, use the command

savconfig

with the operation query and the parameter NamedScans. Specify the name of the scan and the path of the file to which you want to export the scan.

For example, to export the scan Daily to the file

/home/fred/DailyScan

, type:

/opt/sophos-av/bin/savconfig query NamedScans Daily >

/home/fred/DailyScan

13.4 Export names of all scheduled scans to a file

■

To export the names of all scheduled scans (including those that have been created using

Enterprise Console) from Sophos Anti-Virus to a file, use the command

savconfig

with the operation query and the parameter NamedScans. Specify the path of the file to which you want to export the scan names.

For example, to export the names of all scheduled scans to the file

/home/fred/AllScans

, type:

/opt/sophos-av/bin/savconfig query NamedScans > /home/fred/AllScans

Note:

SEC:FullSystemScan

is a scan that is always defined if the computer is managed by Enterprise Console.

13.5 Export a scheduled scan to standard output

■

To export a scheduled scan from Sophos Anti-Virus to standard output, use the command

savconfig

with the operation query and the parameter NamedScans. Specify the name of the scan.

For example, to export the scan Daily to standard output, type:

/opt/sophos-av/bin/savconfig query NamedScans Daily

13.6 Export names of all scheduled scans to standard output

■

To export the names of all scheduled scans (including those that have been created using

Enterprise Console) from Sophos Anti-Virus to standard output, use the command

savconfig

with the operation query and the parameter NamedScans.

For example, to export the names of all scheduled scans to standard output, type:

/opt/sophos-av/bin/savconfig query NamedScans

Note:

SEC:FullSystemScan

is a scan that is always defined if the computer is managed by Enterprise Console.

configuration guide

13.7 Update a scheduled scan from a file

Note: You cannot update scheduled scans that have been added using Enterprise Console.

1. Open the file that defines the scheduled scan that you want to update.

If the scan is not already defined in a file, you can export the scan to a file, as explained in

Export a scheduled scan to a file

(page 38).

2. Amend the definition as necessary, using only the parameters listed in the template scan definition:

/opt/sophos-av/doc/namedscan.example.en

. You must define the scan completely, instead of just specifying what you want to update.

3. Save the file.

4. Update the scheduled scan in Sophos Anti-Virus using the command

savconfig

with the operation update and the parameter NamedScans. Specify the name of the scan and the path of the scan definition file.

For example, to update the scan Daily, which is stored in

/home/fred/DailyScan

, type:

/opt/sophos-av/bin/savconfig update NamedScans Daily

/home/fred/DailyScan

13.8 Update a scheduled scan from standard input

Note: You cannot update scheduled scans that have been added using Enterprise Console.

1. Update the scheduled scan in Sophos Anti-Virus using the command

savconfig

with the operation update and the parameter NamedScans. Specify the name of the scan and use a hyphen to specify that the definition is to be read from standard input.

For example, to update the scan Daily, type:

/opt/sophos-av/bin/savconfig update NamedScans Daily -

When you press ENTER, Sophos Anti-Virus waits for you to type the definition of the scheduled scan.

2. Define what to scan, when to scan it, and any other options, using only the parameters listed in the template scan definition:

/opt/sophos-av/doc/namedscan.example.en

. After typing each parameter and its value, press ENTER. You must define the scan completely, instead of just specifying what you want to update.

To schedule the scan, you must include at least one day and one time.

3. To complete the definition, press CTRL+D.

13.9 View log of a scheduled scan

■

To view the log of a scheduled scan, use the command

savlog

and the option namedscan.

Specify the name of the scan.

For example, to view the log of the scan Daily, type:

Sophos Anti-Virus for Linux

/opt/sophos-av/bin/savlog --namedscan=Daily

13.10 Remove a scheduled scan

Note: You cannot remove scheduled scans that have been added using Enterprise Console.

■

To remove a scheduled scan from Sophos Anti-Virus, use the command

savconfig

with the operation remove and the parameter NamedScans. Specify the name of the scan.

For example, to remove the scan Daily, type:

/opt/sophos-av/bin/savconfig remove NamedScans Daily

13.11 Remove all scheduled scans

Note: You cannot remove scheduled scans that have been added using Enterprise Console.

■

To remove all scheduled scans from Sophos Anti-Virus, type:

/opt/sophos-av/bin/savconfig delete NamedScans

configuration guide

14 Appendix: Configuring alerts

Note: If you are configuring a single computer that is on a network, the configuration might be overwritten if the computer downloads a new Enterprise Console configuration or Extra Files configuration.

You can configure Sophos Anti-Virus to send an alert when it detects viruses, there is a scanning error, or some other type of error. Alerts can be sent via the following methods:

■

Desktop pop-ups (on-access scanning only)

Command-line (on-access scanning only)

■

Email (on-access and on-demand scanning)

Desktop pop-up and command-line alerts are sent in the language of the computer that raises the alert. Email alerts can be sent in English or Japanese.

14.1 Configuring desktop pop-up alerts

14.1.1 Turn off desktop pop-up alerts

By default, desktop pop-up alerts are turned on.

14.1.1.1 CLI

■

To turn off desktop pop-up alerts, type:

/opt/sophos-av/bin/savconfig set UIpopupNotification disabled

■

To turn off both desktop pop-up and command-line alerts, type:

/opt/sophos-av/bin/savconfig set UINotifier disabled

14.1.1.2 Web UI

■

To turn off desktop pop-up alerts, on the Alerts tab, in the Desktop Pop-up and Command-line panel, clear the Enable desktop pop-up alerts check box. Click Set to apply the change.

14.1.2 Specify custom message

A custom English message is included in each desktop pop-up alert in addition to the alert message itself. You can change the text of this custom message but it is not translated. The same message is used for command-line alerts.

14.1.2.1 CLI

■

To specify the custom message, use the parameter UIContactMessage. For example, type:

Sophos Anti-Virus for Linux

/opt/sophos-av/bin/savconfig set UIContactMessage 'Contact IT'

14.1.2.2 Web UI

■

To specify the custom message, on the Alerts tab, in the Desktop Pop-up and Command-line panel, type the message in the Additional message text box. Click Set to apply the change.

14.2 Configuring command-line alerts

14.2.1 Turn off command-line alerts

By default, command-line alerts are turned on.

14.2.1.1 CLI

■

To turn off command-line alerts, type:

/opt/sophos-av/bin/savconfig set UIttyNotification disabled

■

To turn off both desktop pop-up and command-line alerts, type:

/opt/sophos-av/bin/savconfig set UINotifier disabled

14.2.1.2 Web UI

■

To turn off command-line alerts, on the Alerts tab, in the Desktop Pop-up and Command-line panel, clear the Enable command-line alerts check box. Click Set to apply the change.

14.2.2 Specify custom message

A custom English message is included in each command-line alert in addition to the alert message itself. You can change the text of this custom message but it is not translated. The same message is used for desktop pop-up alerts.

14.2.2.1 CLI

■

To specify the custom message, use the parameter UIContactMessage. For example, type:

/opt/sophos-av/bin/savconfig set UIContactMessage 'Contact IT'

14.2.2.2 Web UI

■

To specify the custom message, on the Alerts tab, in the Desktop Pop-up and Command-line panel, type the message in the Additional message text box. Click Set to apply the change.

configuration guide

14.3 Configuring email alerts

14.3.1 Turn off email alerts

By default, email alerts are turned on.

14.3.1.1 CLI

■

To turn off email alerts, type:

/opt/sophos-av/bin/savconfig set EmailNotifier disabled

14.3.1.2 Web UI

■

To turn off email alerts, on the Alerts tab, in the Email panel, clear the Enable email alerts check box. Click Set to apply the change.

14.3.2 Specify the SMTP server hostname or IP address

By default, the hostname and port of the SMTP server are localhost:25.

14.3.2.1 CLI

■

To specify the hostname or IP address of the SMTP server, use the parameter EmailServer.

For example, type:

/opt/sophos-av/bin/savconfig set EmailServer 171.17.31.184

14.3.2.2 Web UI

■

To specify the hostname or IP address of the SMTP server, on the Alerts tab, in the Email panel, type the hostname or IP address in the Hostname or IP address of the SMTP server text box. Click Set to apply the change.

14.3.3 Specify the language

By default, the language that is used for the alert message itself is English.

14.3.3.1 CLI

■

To specify the language that is used for the alert message itself, use the parameter

EmailLanguage. Currently, valid values are just

English

Japanese

. For example, type:

/opt/sophos-av/bin/savconfig set EmailLanguage Japanese

Note: This language selection applies only to the alert message itself, not the custom message that is included in each email alert in addition to the alert message itself.

Sophos Anti-Virus for Linux

14.3.3.2 Web UI

■

To specify the language that is used for the alert message itself, on the Alerts tab, in the Email panel, click the language in the Language to use in notification emails list. Click Set to apply the change.

Note: This language selection applies only to the alert message itself, not the custom message that is included in each email alert in addition to the alert message itself.

14.3.4 Specify the email recipients

By default, email alerts are sent to root@localhost.

14.3.4.1 CLI

■

To add an address to the list of recipients of email alerts, use the parameter Email with the operation add. For example, type:

/opt/sophos-av/bin/savconfig add Email admin@localhost

Note: You can specify more than one recipient in the same command. Separate each recipient by using a space.

■

To remove an address from the list, use the parameter Email with the operation remove. For example, type:

/opt/sophos-av/bin/savconfig remove Email admin@localhost

14.3.4.2 Web UI

■

To add an address to the list of recipients of email alerts, on the Alerts tab, in the Email panel, type the address in the Email recipients text box. Click Add New Entry to add the address to the list of recipients.

■

To remove an address from the list, click the address and click Remove Selected Entry.

14.3.5 Specify the email Sender address

By default, email alerts are sent from root@localhost.

■

To specify an email Sender address, use the parameter EmailSender. For example, type:

/opt/sophos-av/bin/savconfig set EmailSender admin@localhost

14.3.6 Specify the email ReplyTo address

■

To specify an email ReplyTo address, use the parameter EmailReplyTo . For example, type:

/opt/sophos-av/bin/savconfig set EmailReplyTo admin@localhost

configuration guide

14.3.7 Specify what happens if viruses are detected on-access

By default, Sophos Anti-Virus sends an email alert if on-access scanning detects viruses. A custom

English message is included in each alert in addition to the alert message itself. You can change the text of this custom message but it is not translated.

14.3.7.1 CLI

■

To turn off the sending of email alerts if viruses are detected on-access, type:

/opt/sophos-av/bin/savconfig set SendThreatEmail disabled

■

To specify the custom message, use the parameter ThreatMessage. For example, type:

/opt/sophos-av/bin/savconfig set ThreatMessage 'Contact IT'

14.3.7.2 Web UI

■

To turn off the sending of email alerts if viruses are detected on-access, on the Alerts tab, in the Email panel, clear the Send email when virus detected check box. Click Set to apply the change.

■

To specify the custom message, on the Alerts tab, in the Email panel, type the message in the Additional message to be included in virus detection email alerts text box. Click Set to apply the change.

14.3.8 Specify what happens if there is an on-access scanning error

By default, Sophos Anti-Virus sends an email alert if there is an on-access scanning error. A custom English message is included in each alert in addition to the alert message itself. You can change the text of this custom message but it is not translated.

14.3.8.1 CLI

■

To turn off the sending of email alerts if there is an on-access scanning error, type:

/opt/sophos-av/bin/savconfig set SendErrorEmail disabled

■

To specify the custom message, use the parameter ScanErrorMessage. For example, type:

/opt/sophos-av/bin/savconfig set ScanErrorMessage 'Contact IT'

14.3.8.2 Web UI

■

To turn off the sending of email alerts if there is an on-access scanning error, on the Alerts tab, in the Email panel, clear the Send email when there is a scan error check box. Click

Set to apply the change.

■

To specify the custom message, on the Alerts tab, in the Email panel, type the message in the Additional message to be included in scan error email alerts text box. Click Set to apply the change.

Sophos Anti-Virus for Linux

14.3.9 Turn on-demand email alerts off

By default, Sophos Anti-Virus emails the summary of an on-demand scan if, and only if, the scan detects viruses.

■

To turn off the emailing of an on-demand scan summary if viruses are detected, type:

/opt/sophos-av/bin/savconfig set EmailDemandSummaryIfThreat disabled

14.3.10 Specify what happens if an event is logged

By default, Sophos Anti-Virus sends an email alert when an event is logged in the Sophos Anti-Virus log. A custom English message is included in each alert in addition to the alert message itself.

You can change the text of this custom message but it is not translated.

14.3.10.1 CLI

■

To specify the custom message, use the parameter LogMessage. For example, type:

/opt/sophos-av/bin/savconfig set LogMessage 'Contact IT'

14.3.10.2 Web UI

■

To specify the custom message, on the Alerts tab, in the Email panel, type the message in the Additional message to be included in log event email alerts text box. Click Set to apply the change.

configuration guide

15 Appendix: Configure logging

By default, scanning activity is logged in the Sophos Anti-Virus log:

/opt/sophos-av/log/savd.log

. When it reaches 1 MB in size, it is backed up to the same directory automatically and a new log is started.

■

To see the default number of logs that are kept, type:

/opt/sophos-av/bin/savconfig -s query LogMaxSizeMB

■

To specify the maximum number of logs that are kept, use the parameter LogMaxSizeMB.

For example, to set the maximum number of logs to 50, type:

/opt/sophos-av/bin/savconfig set LogMaxSizeMB 50

Sophos Anti-Virus for Linux

16 Appendix: Configuring updating

Important: If you manage Sophos Anti-Virus using Sophos Enterprise Console, you must configure updating using Enterprise Console. For information about how to do this, see the Enterprise

Console Help instead of this section.

16.1 Basic concepts

Update server

An update server is a computer on which you have installed Sophos Anti-Virus and which also acts as an update source for other computers. These other computers are either update servers or update clients, depending on how you deploy Sophos Anti-Virus across the network.

Update client

An update client is a computer on which you have installed Sophos Anti-Virus and which does not need to act as an update source for other computers.

Primary update source

The primary update source is the location of the updates that a computer usually accesses. It might need access credentials.

Secondary update source

The secondary update source is the location of the updates that a computer accesses when the primary update source is unavailable. It might need access credentials.

16.2 savsetup configuration command

savsetup

is a command that you can use to configure updating. You should use it only for the specific tasks explained in the following subsections.

Although it enables you to access only some of the parameters that you can access with

savconfig

, it is easier to use. It prompts you for values of parameters, and you respond by selecting or typing the values. To run

savsetup

, type:

/opt/sophos-av/bin/savsetup

configuration guide

16.3 Check the auto-updating configuration for a computer

1. At the computer that you want to check, type:

/opt/sophos-av/bin/savsetup savsetup

asks you to select what you want to do.

2. Select Auto-updating configuration.

savsetup

asks you to select what you want to do.

3. Select Display update configuration to see the current configuration.

16.4 Configure an update server

You can use any standalone Sophos Anti-Virus installation as an update server for other network computers.

Note:

The update server must be a 64-bit computer if it is used to keep any 64-bit clients up to date. If the update server is a 32-bit computer, it does not download 64-bit updates, and cannot update the clients.

1. At the update server, type:

/opt/sophos-av/bin/savsetup savsetup

asks you to select what you want to do.

2. Select an option and follow the prompts to configure the update server.

When configuring updates, if you are updating from Sophos, enter the username and password that are included with your license. If you are updating from an update server, you can specify either an HTTP address or a UNC path, depending on how you have set up the update server.

3. To host updates for other Sophos Anti-Virus clients: a) Copy the local cache directory (/opt/sophos-av/update/cache/) to a different location on the filesystem.

This can be automated using a script.

b) Publish the location to other networked computers via HTTP, SMB, NFS or other method.

This location will be the central installation directory (CID) from where the clients will download updates.

16.5 Configure multiple update clients to update

This section explains how to change the update parameters in the Extra Files configuration. The configuration is then downloaded by the update clients the next time that they update.

This section assumes that you have already created the Extra Files configuration. If it is not

created, see Appendix: Extra Files configuration

(page 30).

Sophos Anti-Virus for Linux

Note: This section describes how to configure multiple update clients to update from the primary update source. You can use the same procedure to configure your secondary update source by replacing Primary with Secondary. For example, instead of PrimaryUpdateSourcePath use

SecondaryUpdateSourcePath.

To configure multiple update clients to update:

1. At the computer where the Extra Files configuration is stored, set the update source address either to

sophos:

or the location of the central installation directory (CID) using the parameter

PrimaryUpdateSourcePath.

To update from the CID, you can specify either an HTTP address or a UNC path, depending on how you have set up the update server. For example, type: