Snort mailing list archives
Re: test a threshold rule, please?
From: Rich Adamson <radamson () routers com>
Date: Thu, 5 Aug 2004 21:45:41 -0600
Apparently the problem was a Win32 specifc issue that Chris rsolved. He sent a private email with an executable that addressed the issue, and its now working just fine. The seconds and count parameters in the example were intended to generate some sample alerts, which it did following the fix. I've since increased those thresholds to realistic numbers. :) Rich ------------------------
Rich, I don't know if this is one of those "better late than never" situations, but I was looking through the archive for something resembling your rule below to detect high rates of SYNs and just wanted to let you know that this rule, with a few small modifications (i changed the count to 25 and seconds to 1) does not cause ANY problems in Snort 2.2.0RC1 running on Linux. On Tue, 6 Jul 2004 08:41:00 -0600, Rich Adamson <radamson () routers com> wrote:Could someone test the following rule in either linux or win32, please? alert tcp $HOME_NET any -> any any (msg: "High SYN Traffic"; flags:S; threshold: type threshold, track by_src, seconds 60, count 1; classtype:misc-activity; sid: 1000002; rev:1;) I'm trying to determine whether the above might indicate be a bug in linux, win32, or syntax error on my part. If I try the above rule in win32 (v2.2.0rc1 build 28), snort will not start due to an integer error reading the rule. Inserting content:" "; offset:0; in the above allows snort to start. Any help/suggestions would be greatly appreciated. Off-list comments are fine if you'd like. Rich ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.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
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Current thread:
- test a threshold rule, please? Rich Adamson (Jul 06)
- Message not available
- Re: test a threshold rule, please? Syke (Jul 06)
- Message not available
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- Re: test a threshold rule, please? Rich Adamson (Jul 06)
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- Re: test a threshold rule, please? sekure (Aug 05)
- Re: test a threshold rule, please? Rich Adamson (Aug 05)
- Re: test a threshold rule, please? Chris Reid (Aug 05)
- Re: test a threshold rule, please? Rich Adamson (Aug 05)
- <Possible follow-ups>
- RE: test a threshold rule, please? Joshua Berry (Jul 06)
- RE: test a threshold rule, please? Rich Adamson (Jul 06)