https://community.splunk.com/t5/Splunk-Search/How-to-generate-a-search-that-determines-inactivity-of-firewall/m-p/315042#M94325 <P>I performed the search, and had to make a few adjustments (no results from above search):</P> <P>| stats latest(_time) as Time by fwrule</P> <P>From here, I'm having issues with the eval function. My stats statement records 'Time' in epochtime, but I need to then find all rules that have had their latest 30 days before now. Any other ideas?</P> Tue, 28 Feb 2017 21:25:15 GMT elpfarr 2017-02-28T21:25:15Z https://community.splunk.com/t5/Splunk-Search/How-to-generate-a-search-that-determines-inactivity-of-firewall/m-p/315039#M94322 <P>I'm having issues creating a search that determines inactivity of firewall rules. I'd like to determine if a firewall rule was seen 31+ days ago, but has not reported in the last 30 days. </P> <P>For example, if "fwrule=3001" was triggered 31 days ago, but not since, it should populate my report.</P> Wed, 22 Feb 2017 18:59:39 GMT https://community.splunk.com/t5/Splunk-Search/How-to-generate-a-search-that-determines-inactivity-of-firewall/m-p/315039#M94322 elpfarr 2017-02-22T18:59:39Z https://community.splunk.com/t5/Splunk-Search/How-to-generate-a-search-that-determines-inactivity-of-firewall/m-p/315040#M94323 <P>What does your search look like so far? </P> Thu, 23 Feb 2017 12:29:17 GMT https://community.splunk.com/t5/Splunk-Search/How-to-generate-a-search-that-determines-inactivity-of-firewall/m-p/315040#M94323 adayton20 2017-02-23T12:29:17Z https://community.splunk.com/t5/Splunk-Search/How-to-generate-a-search-that-determines-inactivity-of-firewall/m-p/315041#M94324 <PRE><CODE>&lt;base search&gt; | stats latest by fwrule as last_seen | eval days_since = (now() - last_seen) / 86400 </CODE></PRE> Sat, 25 Feb 2017 17:12:12 GMT https://community.splunk.com/t5/Splunk-Search/How-to-generate-a-search-that-determines-inactivity-of-firewall/m-p/315041#M94324 troyward 2017-02-25T17:12:12Z https://community.splunk.com/t5/Splunk-Search/How-to-generate-a-search-that-determines-inactivity-of-firewall/m-p/315042#M94325 <P>I performed the search, and had to make a few adjustments (no results from above search):</P> <P>| stats latest(_time) as Time by fwrule</P> <P>From here, I'm having issues with the eval function. My stats statement records 'Time' in epochtime, but I need to then find all rules that have had their latest 30 days before now. Any other ideas?</P> Tue, 28 Feb 2017 21:25:15 GMT https://community.splunk.com/t5/Splunk-Search/How-to-generate-a-search-that-determines-inactivity-of-firewall/m-p/315042#M94325 elpfarr 2017-02-28T21:25:15Z https://community.splunk.com/t5/Splunk-Search/How-to-generate-a-search-that-determines-inactivity-of-firewall/m-p/315043#M94326 <P>When you do the eval and get the difference between now and the event date and then device that by 86400 that gives you the number of days since it fired. Then just filter with the search command for days_since &gt; 30</P> Wed, 01 Mar 2017 15:35:08 GMT https://community.splunk.com/t5/Splunk-Search/How-to-generate-a-search-that-determines-inactivity-of-firewall/m-p/315043#M94326 troyward 2017-03-01T15:35:08Z https://community.splunk.com/t5/Splunk-Search/How-to-generate-a-search-that-determines-inactivity-of-firewall/m-p/315044#M94327 <P>This search is working for me, I've validated the output and it's accurate. I can change "-30d" to whatever time frame the search should alert on.</P> <P>ex. "-7d" = displays rules that haven't fired in the last 7 days, but have before that</P> <P>I've set my time range to "All Time." <BR /> I'm open for comments on making this more efficient</P> <PRE> sourcetype="my_source" fwrule="*" | stats latest(_time) as Time by fwrule | where relative_time(now(), "-30d") &gt; Time | eval Last_seen=strftime(Time, "%m/%d/%y %H:%M:%S") | fields - Time | sort - Last_seen </PRE> Wed, 01 Mar 2017 18:54:13 GMT https://community.splunk.com/t5/Splunk-Search/How-to-generate-a-search-that-determines-inactivity-of-firewall/m-p/315044#M94327 elpfarr 2017-03-01T18:54:13Z