Splunk Search

Watchlist Lookup

opsec
New Member

Hello, we need help setting up an ongoing query against a watchlist of suspicious IP addresses. We have made the following config changes so far with no results:

  1. created a .CSV file in $SPLUNKroot\etc\apps\search\lookups (see sample contents below)

    bad_ip,suspicious
    X.X2.12.12,1
    X.X3.12.13,1
    X.X4.191.4,1
    X.X5.191.14,1

  2. create the following props.conf; and transform.conf in \search\local\

props.conf

[cisco_asa]
LOOKUP-watch = sampl_watchlist bad_ip AS src

transforms.conf

[sampl_watchlist]
filename = sampl_watchlist.csv

Basically, how can we run our firewall logs against the watch list and alert on all matches. Thanks.

Tags (2)
0 Karma

lguinn2
Legend

This should do it:

sourcetype=cisco_asa suspicious=1

because you defined an automatic lookup in props.conf

BTW, I would add the following to transforms.conf

min_matches = 1
default_match = "no match"

which will let you do other interesting searches, too.

0 Karma
Get Updates on the Splunk Community!

Adoption of RUM and APM at Splunk

    Unleash the power of Splunk Observability   Watch Now In this can't miss Tech Talk! The Splunk Growth ...

Routing logs with Splunk OTel Collector for Kubernetes

The Splunk Distribution of the OpenTelemetry (OTel) Collector is a product that provides a way to ingest ...

Welcome to the Splunk Community!

(view in My Videos) We're so glad you're here! The Splunk Community is place to connect, learn, give back, and ...