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Sophos moduleedit

This is a module for Sophos Products, currently it supports XG SFOS logs sent in the syslog format.

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

The syslog format choosen should be Default.

Read the quick start to learn how to configure and run modules.

Compatibilityedit

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

Configure the moduleedit

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.

Variable settingsedit

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.

When you specify a setting at the command line, remember to prefix the setting with the module name, for example, sophos.xg.var.paths instead of xg.var.paths.

xg fileset settingsedit

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:
       "1234567890123457": "a.host.local"
       "1234234590678557": "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

SophosXG ECS fieldsedit

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

SophosXG Fields ECS Fields

application

network.protocol

classification

rule.category

device_id

observer.serial_number

domainname

url.domain

dst_host

destination.address

dst_int

observer.egress.interface.name

dstzonetype

observer.egress.zone

dst_ip

destination.ip

destinationip

destination.ip

dst_mac

destination.mac

dstname

destination.address

dst_port

destination.port

dst_domainname

url.domain

duration

event.duration

filename

file.name

filetype

file.extension

file_size

file.size

file_path

file.directory

fw_rule_id

rule.id

from_email_address

source.user.email

httpstatus

http.response.status_code

in_interface

observer.ingress.interface.name

log_id

event.code

log_subtype

event.action

message

message

method

http.request.method

policy_type

rule.ruleset

protocol

network.transport

recv_bytes

destination.bytes

recv_pkts

destination.packets

referer

http.request.referrer

sent_bytes

source.bytes

sent_pkts

source.packets

sha1sum

file.hash.sha1

srczonetype

observer.ingress.zone

src_ip

source.ip

src_domainname

url.domain

sourceip

source.ip

src_mac

source.mac

src_port

source.port

status_code

http.response.status_code

time_zone

event.timezone

to_email_address

destination.user.email

tran_dst_ip

destination.nat.ip

tran_dst_port

destination.nat.port

tran_src_ip

source.nat.ip

tran_src_port

source.nat.port

url

url.original

user_agent

user_agent.original

useragent

user_agent.original

user_gp

source.user.group

user_name

source.user.name

ws_protocol

http.version

Fieldsedit

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

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