Snort mailing list archives
Snort rules order.
From: "larosa, vjay" <larosa_vjay () emc com>
Date: Tue, 29 Oct 2002 15:12:33 -0500
Hello, I am running snort v 1.9.0 build 209 and I am having a problem with the ordering of some rules. I was under the assumption that this didn't matter anymore with snort 1.9.0. I have two rules, (trap-db is a custom ruletype I defined. Instead of using alert I use trap-db to send snmp traps for some events). trap-db udp $EXTERNAL_NET any -> $HOME_NET 69 (msg:"TFTP GET Admin.dll"; content : "|0001|"; offset:0; depth:2; content:"admin.dll"; nocase; classtype:successful-admin; refe rence:url,www.cert.org/advisories/CA-2001-26.html; sid:1289; rev:2;) and alert udp $EXTERNAL_NET any -> $HOME_NET 69 (msg:"TFTP Get"; content:"|00 01|"; offset:0; de pth:2; classtype:bad-unknown; sid:1444; rev:2;) For some reason the second rule gets triggered when I try a tftp session and do a get admin.dll, but if I say get passwd the correct passwd rule triggers. alert udp any any -> any 69 (msg:"TFTP GET passwd"; content: "|0001|"; offset:0; depth:2; co ntent:"passwd"; nocase; classtype:successful-admin; sid:1443; rev:1;) Anybody have any clue what might be wrong? Thanks! vjl V.Jay LaRosa EMC Corporation Information Security 171 South Street (508)249-3355 office Hopkinton, MA 01748 (508)498-5575 cell www.emc.com (888-799-9750 pager larosa_vjay () emc com (508)497-8082 fax ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ 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:
- Snort rules order. larosa, vjay (Oct 29)
- Re: Snort rules order. Andrew R. Baker (Oct 29)
- <Possible follow-ups>
- RE: Snort rules order. larosa, vjay (Oct 29)
- Re: Snort rules order. Andrew R. Baker (Oct 29)