Snort mailing list archives
Detecting TCP session without data after three-way handshake
From: Willst Mail <willstmail () gmail com>
Date: Wed, 2 Nov 2011 19:38:43 -0400
Hello, Here's a theoretical question for you. I'm wondering if Snort can realistically identify sessions in which a three-way TCP handshake is established but then no data is requested by the client or sent by the server. In other words, two endpoints do their SYN, SYN/ACK, ACK exchange, then the connection is terminated, gracefully or otherwise, either immediately or after a period of time, and with no other communication between the endpoints during that session. I can review firewall logs to find sessions with very little data transferred, which could help, but I was wondering if anyone has ideas about how to identify these types of sessions with Snort. I'm going to cross-post this between the Google group and SourceForge mailing list to see if any smart people want to chime in. Thanks! -w ------------------------------------------------------------------------------ RSA(R) Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ 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 Please visit http://blog.snort.org to stay current on all the latest Snort news!
Current thread:
- Detecting TCP session without data after three-way handshake Willst Mail (Nov 02)
- Re: Detecting TCP session without data after three-way handshake Edward Fjellskål (Nov 03)
- Re: Detecting TCP session without data after three-wayhandshake Jason Haar (Nov 03)
- Re: Detecting TCP session without data after three-wayhandshake Giles Coochey (Nov 04)
- Re: Detecting TCP session without data after three-wayhandshake Martin Holste (Nov 04)
- Re: Detecting TCP session without data after three-wayhandshake Seth Hall (Nov 04)