Splunk Search

INPUTLOOKUP -- Match against field1 OR field2

vragosta
Path Finder

I am searching some firewall logs against a lookup file using INPUTLOOKUP. I don't care if the IP addresses in the lookup file match the source IP field (src_ip) or destination IP field (dest_ip) in the firewall logs. Is this the only way to craft such a search:

source="udp:514" [| inputlookup hostile_ip2.csv | fields src_ip] OR [| inputlookup hostile_ip2.csv | fields dest_ip]

I'm not sure how efficient this search is, or if it's exactly what I am looking for. It appears to be working as intended.

Thank you,

Tags (1)

somesoni2
Revered Legend

Try following-

source="udp:514" [|inputlookup hostile_ip2.csv | eval src_ip=hostile_ip| eval dest_ip=hostile_ip| table src_ip, dest_ip| format "(" "(" "OR" ")" "OR" ")" ] 

Assumption
1. hostile_ip2.csv file contains only one fields "hostile_ip".
2. You need to list all the events from Firewall logs (which contains two fields src_ip and dest_ip) where any of src_ip or dest_ip matches hostile_ip.

the_wolverine
Champion

You could use format to specify OR instead of the default AND:

 source="udp:514" [ | inputlookup hostile_ip2.csv | fields src_ip,dest_ip | format "(" "(" "AND" ")" "OR" ")" ]
0 Karma

jpass
Contributor

One way is to search the entire _raw field instead of searching by field. You might need to reformat your .csv so it only has a single column. You rename your field "query" which is a reserved keyword or something like that. Here's where I found this answer:

http://answers.splunk.com/answers/38520/how-to-generate-a-report-for-searching-the-request-from-huge...

0 Karma
Get Updates on the Splunk Community!

.conf24 | Registration Open!

Hello, hello! I come bearing good news: Registration for .conf24 is now open!   conf is Splunk’s rad annual ...

ICYMI - Check out the latest releases of Splunk Edge Processor

Splunk is pleased to announce the latest enhancements to Splunk Edge Processor.  HEC Receiver authorization ...

Introducing the 2024 SplunkTrust!

Hello, Splunk Community! We are beyond thrilled to announce our newest group of SplunkTrust members!  The ...