Snort mailing list archives
Re: How do you keep customized rules updated?
From: Alex Butcher <alex.butcher () bristol ac uk>
Date: Thu, 22 Feb 2007 09:46:36 +0000
Steve Bernacki wrote:
Actually, Oinkmaster works very well for keeping customized rulesets updated as well. The trick is that it requires a lot of up front work initially to set up the appropriate disablesid/modifysid rules in order to programmatically make your customizations. However, Once this is done, it makes keeping up with new signature releases a breeze.
Seconded. Examples of some things I do: Reclassification, using new, locally-defined classifications: modifysid * "(MALWARE.*)classtype:([^;]*);(.*)" | "$1 classtype:malware-activity;$3" Enabling tagging of sessions: modifysid * "classtype:[ ]*successful-user;" | "classtype:successful-user; tag:host,10,seconds;" modifysid * "classtype:[ ]*successful-admin;" | "classtype:successful-admin; tag:host,10,seconds;" Adding thresholding: modifysid * "classtype:[ ]*chat-protocol;" | "classtype:chat-protocol; threshold: type limit, track by_src, count 1, seconds 86400;" ICMP thresholding: modifysid * "(msg:\"ICMP Destination Unreachable Port Unreachable.*)\)" | "$1 threshold: type both, track by_dst, count 800, seconds 600;\)" modifysid * "(msg:\"ICMP.*PING.*)\)" | "$1 threshold: type both, track by_src, count 800, seconds 600;\)" Regex wizards can probably improve on some of my gnarly regexes. :-)
Steve
Best Regards, Alex. -- Alex Butcher: Security & Integrity, Personal Computer Systems Group Information Systems and Computing GPG Key ID: F9B27DC9 GPG Fingerprint: D62A DD83 A0B8 D174 49C4 2849 832D 6C72 F9B2 7DC9 ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ 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:
- How do you keep customized rules updated? OlRoy OlRoy (Feb 21)
- Re: How do you keep customized rules updated? Steve Bernacki (Feb 21)
- Re: How do you keep customized rules updated? Alex Butcher (Feb 22)
- Re: How do you keep customized rules updated? Nigel Houghton (Feb 21)
- Re: How do you keep customized rules updated? Jeff Dell (Feb 21)
- Re: How do you keep customized rules updated? Steve Bernacki (Feb 21)