This is a discussion on [Snort-users] Re: [Snort-sigs] bad traffic in syn packet within the Snort forums, part of the System Security and Security Related category; --=-JqTJv8TZ4zxM8+gRmbTc Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Tue, 2005-09-06 at 09:10 -0400, ...
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--=-JqTJv8TZ4zxM8+gRmbTc Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Tue, 2005-09-06 at 09:10 -0400, John Hally wrote: > Need a quick sanity check here. I'm seeing alerts for traffic in syn > packets, and all are destined for TCP/53. Is it possible that data is > being piggy-backed in the syn packet on purpose and the traffic is > benign? I don't see any other anomalies to or from these hosts, but > wanted to make sure that I'm not overlooking something obvious. Heya John, what is the data in question? Anything identifiable? If not, these could be probes from load-balancers. Perhaps you can see a pattern by src or dst? Cheers, Frank --=20 Ciscogate: Shame on Cisco. Double-Shame on ISS. --=-JqTJv8TZ4zxM8+gRmbTc Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (FreeBSD) iD8DBQBDHy6qwBQKb2zelzoRAqVSAKC96PL9kP9gTlopMLJk6Y rR0PuUbwCgjJUh TnNXxx6Bw8UHoxCjWsAjSoM= =cTIG -----END PGP SIGNATURE----- --=-JqTJv8TZ4zxM8+gRmbTc-- ------------------------------------------------------- SF.Net email is Sponsored by the Better Software Conference & EXPO September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices Agile & Plan-Driven Development * Managing Projects & Teams * Testing & QA Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf _______________________________________________ Snort-users mailing list Snort-users@lists.sourceforge.net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/...fo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.p...st=snort-users |