Sophos module

This is a module for Sophos Products, currently it accepts logs in syslog format or from a file for the following devices:

• xg fileset: supports Sophos XG SFOS logs.

To configure a remote syslog destination, please reference the SophosXG/SFOS Documentation.

The syslog format choosen in Sophos configuration should be Central Reporting Format.

This module has been tested against SFOS version 17.5.x, 18.0.x, and 18.5.x. Versions above this and between 18.0 - 18.5 are expected to work but have not been tested.

You can further refine the behavior of the sophos module by specifying variable settings in the modules.d/sophos.yml file, or overriding settings at the command line.

You must enable at least one fileset in the module. Filesets are disabled by default.

Each fileset has separate variable settings for configuring the behavior of the module. If you don’t specify variable settings, the sophos module uses the defaults.

For advanced use cases, you can also override input settings. See Override input settings.

The Sophos XG firewalls do not include hostname in either the syslog header or body, and the only unique identifier for each firewall is the related serial number.

Below you will see an example configuration file, that sets the default hostname (if no serial number is included in the config file), and example on how to map serial numbers to a hostname

- module: sophos
  xg:
    enabled: true
    var.input: udp
    var.syslog_host: 0.0.0.0
    var.syslog_port: 9005
    var.default_host_name: firewall.localgroup.local
    var.known_devices:
      - serial_number: "1234567890123457"
        hostname: "a.host.local"
      - serial_number: "1234234590678557"
        hostname: "b.host.local"

var.paths

An array of glob-based paths that specify where to look for the log files. All patterns supported by Go Glob are also supported here. For example, you can use wildcards to fetch all files from a predefined level of subdirectories: /path/to/log/*/*.log. This fetches all .log files from the subfolders of /path/to/log. It does not fetch log files from the /path/to/log folder itself. If this setting is left empty, Filebeat will choose log paths based on your operating system.

var.input

The input to use, can be either the value tcp, udp or file.

var.syslog_host

The interface to listen to all syslog traffic. Defaults to localhost. Set to 0.0.0.0 to bind to all available interfaces.

var.syslog_port

The port to listen for syslog traffic. Defaults to 9005.

var.host_name

Host name / Observer name, since SophosXG does not provide this in the syslog file. Default to firewall.localgroup.local

This is a list of SophosXG fields that are mapped to ECS.

For a description of each field in the module, see the exported fields section.