topic Re: Basic lookup command in Splunk Search

Basic lookup command

clozach — Mon, 14 Oct 2019 19:15:42 GMT

Hi all,

I am curious the best way to write the following lookup query.

I have a 1 column lookup of firewall rule names. I would like to search our firewall index and use the lookup to determine which firewall rules haven't been used in the last 30 days.

Thanks for your time and help.

Re: Basic lookup command

somesoni2 — Mon, 14 Oct 2019 19:27:16 GMT

Try something like this (assuming there is a field firewall_rule available in your firewall data and same field name is used in your single column lookup. )

index=yourFirewallIndex [| inputlookup firewall_rulename.csv | table firewall_rule ]
| stats count by firewall_rule 
| append [| inputlookup firewall_rulename.csv | table firewall_rule | eval count=0]
| stats max(count) as count by firewall_rule | where count=0

Re: Basic lookup command

clozach — Tue, 15 Oct 2019 14:30:54 GMT

Hi somesoni2,

Thanks so much! This worked. I'm not sure how to accept it as an answer since it is a comment, but I appreciate the help. If you re-post as an answer I will mark it as accepted.

Again, thank you 🙂

Re: Basic lookup command

somesoni2 — Tue, 15 Oct 2019 14:37:59 GMT

Here you go.