Splunk Search

Splunk 8 - TSTATS WHERE IN () does not work with CIDR

samsonusmc
New Member

Providing Splunk 8 the following:

| tstats allow_old_summaries=t count from datamodel=Network_Traffic.All_Traffic where (nodename = All_Traffic.Traffic_By_Action.Allowed_Traffic) (All_Traffic.src_zone="INET") (All_Traffic.dest_ip=172.20.17.119) NOT All_Traffic.src_ip IN (40.96.0.0/13, 40.104.0.0/15, 52.96.0.0/14)by All_Traffic.src_ip, All_Traffic.action | sort - count

It doesn't filter out the subnets we asked to exclude... BUT it works on 7.3

Tags (2)
0 Karma

samsonusmc
New Member

Nevermind.. Known issue
https://docs.splunk.com/Documentation/Splunk/8.0.0/ReleaseNotes/KnownIssues

2019-11-11 SPL-179357, SPL-179700 Negated subnet CIDR filter doesn't work in search.

Workaround:
Workaround:
limits.conf: [search] use_search_evaluator_v2=false

Examples searches that don't filter out values: index=_internal (NOT clientip=127.0.0.0/8) | stats count BY clientip

index=_internal (clientip!=127.0.0.0/8) | stats count BY clientip

index=_internal | stats count BY clientip | search (clientip!=127.0.0.0/8) | stats sum(count) BY clientip | noop search_optimization=false

Filtering with | where is OK: index=_internal | where NOT cidrmatch("127.0.0.0/8", clientip) | stats count BY clientip

0 Karma
Get Updates on the Splunk Community!

Splunk Observability Cloud | Unified Identity - Now Available for Existing Splunk ...

Raise your hand if you’ve already forgotten your username or password when logging into an account. (We can’t ...

Index This | How many sides does a circle have?

February 2024 Edition Hayyy Splunk Education Enthusiasts and the Eternally Curious!  We’re back with another ...

Registration for Splunk University is Now Open!

Are you ready for an adventure in learning?   Brace yourselves because Splunk University is back, and it's ...