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Technology Add-On for Mikrotik RouterOS

The Splunk Technology Add-On for Mikrotik RouterOS provides extractions and CIM normalization for Mikrotik RouterOS devices. CIM data models network traffic, name resolution (DNS), DHCP and authentication are used.

Activation of logging using Mikrotik RouterOS

To activate logging of RouterOS events activate Syslog logging. Use a Syslog server or activate a UDP input on Splunk Forwarder.

To activate logging use the CLI

  • create a logging action /system logging action add name=syslogbw remote=1.2.3.4 remote-port=5200 src-address=2.3.4.5 target=remote

  • create a logging profile /system logging set 0 topics=info,!firewall add action=syslog topics=info add action=syslog topics=warning add action=syslog topics=critical add action=syslog topics=error add action=syslog topics=dns,!debug

Firewall logging

You need to enable logging for every rule you want to analyse. To do so specify a rulename and an action. Action needs to be "drop" or "accept". use "log=yes log-prefix="rulename drop|accept" when creating a rule.

Here is an example for a drop rule: add action=drop chain=input connection-nat-state=!dstnat connection-state=new in-interface=ether1 log=yes log-prefix="input_wan drop"

This is an example for a forward rule: add action=accept chain=forward dst-address=0.0.0.0/0 in-interface=mynet log=yes log-prefix="fwd_bw_internet accept" out-interface=ether1 src-address=192.168.1.0/24

Installation and Deployment of TA-routeros

Download this TA and place it in etc/apps on your Searchhead, Indexers and Universal Forwarders (Syslog servers).

Here is an example inputs.conf:

[monitor:///var/log/cases/routeros/*/*.log]
index = batchworks
sourcetype = routeros
host_segment = 5
disabled = 0

Verify the data input and extraction works by searching for

sourcetype=routeros tag=network tag=communicate