Snort mailing list archives
Re: Rule help
From: Erick Mechler <emechler () techometer net>
Date: Mon, 27 Jan 2003 08:41:04 -0800
:: In other words, I'd like to get SNMP Request UDP alerts from any hosts on my :: LAN (which is a subset of the entire company network) OTHER than the few :: I've designated. How do I designate a subnet and exclude a few hosts from :: that subnet? I tried this - doesn't seem to work with 1.9.0: :: :: alert udp [$HOME_NET,!1.2.4.4,!2.3.4.5,!5.4.3.2] any -> $HOME_NET 161 :: (msg:"SNMP request udp"; reference:cve,CAN-2002-0012; :: reference:cve,CAN-2002-0013; sid:1417; rev:2; classtype:attempted-recon;) Split it up into two rules. You're going to need one pass rule for the hosts you don't care about, and an alert rule for the rest of $HOME_NET. You can't have a rule with mixed logical operators, AFAIK (i.e., some hosts negated, some not). The section in the FAQ re: rule ordering might help with this: http://www.snort.org/docs/faq.html#3.13 Cheers - Erick ------------------------------------------------------- This SF.NET email is sponsored by: SourceForge Enterprise Edition + IBM + LinuxWorld = Something 2 See! http://www.vasoftware.com _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- Thoughts on Snort-flex rule? Rich Adamson (Jan 26)
- Re: Thoughts on Snort-flex rule? Erek Adams (Jan 26)
- SNMP - SNORT Mike Koponick (Jan 26)
- RH 8.0 & SNMP Mike Koponick (Jan 26)
- Rule help Gordon Cunningham (Jan 27)
- Re: Rule help Erick Mechler (Jan 27)
- RE: Rule help Gordon Cunningham (Jan 27)
- Re: Rule help Erek Adams (Jan 27)
- SNMP - SNORT Mike Koponick (Jan 26)
- Re: Thoughts on Snort-flex rule? Erek Adams (Jan 26)