Getting Data In

_TCP_ROUTING for windows monitored data is not routed appropriately in Splunk Version 6

rbal_splunk
Splunk Employee
Splunk Employee

After upgrading SplunkUniversalForwader from Version 5.x to 6.x, now _TCP_ROUTING for windows monitored data is not routed appropriately.
For example:

1)Inputs.conf are

[WinEventLog://Application]

_TCP_ROUTING = unix

[WinEventLog://Security]

[WinEventLog://System]

_TCP_ROUTING = unix

[monitor://C:/Important/unix.log]

_TCP_ROUTING = unix


ii)Outputs.conf

[tcpout]
defaultGroup = win

[tcpout:win]
server = testserver1:9997

[tcpout:unix]
server = testserver2:24003


Data for following sources should have routed to group ‘unix’, but got routed to tcpout:win

[WinEventLog://Application]
[WinEventLog://System]

Only [monitor://C:/Important/unix.log] got routed to _TCP_ROUTING = unix, other windows event data is routed to defaultGroup = win

Tags (2)

rbal_splunk
Splunk Employee
Splunk Employee

The behavior explained above has been identified as Bug (SPL-79009) and is expected to fixed in 6.0.3.
In 6.0, WinEventLog is changed to modular input, while in 5.0 it's a splunkd input processor. Issue is _TCP_ROUTING is not supported by modular input. Therefore, to work around this issue.
The proposed workaround is to set default receiver as the one for modular input, i.e., set the outputs.conf as:
[tcpout]
defaultGroup = unix

[tcpout:win]
server = 192.168.0.107:9997

[tcpout:unix]
server = 10.160.31.12:24003
and set inputs.conf as:
[default]
_TCP_ROUTING = win

[WinEventLog://Application]
checkpointInterval = 5
current_only = 0

[WinEventLog://Security]
checkpointInterval = 5
current_only = 0

[WinEventLog://System]
disabled = 0

[monitor://C:\Important\unix.log]
_TCP_ROUTING = unix
host = RBAL_UF
index = default
sourcetype = unix

Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Your Feedback. Our Roadmap. Visit the PX Feedback Booth at .conf26

You use Splunk every day, come and help shape what's next.  Save Your Seat: Product-Focused Sessions at ...

Agentic SOC Triage: Investigating Splunk ES Notables with MCP Server and a Local LLM

The Problem: Too Many Alerts, Too Little Context Security operations teams running Splunk Enterprise Security ...

Painting a Clearer Picture: Creating Cross-Domain Visibility with AI Canvas

Watch Now Painting a Clearer Picture: Creating Cross-Domain Visibility with AI Canvas     Do you ever feel ...