[Snort-users] Re: [Snort-sigs] bad traffic in syn packet

Frank Knobbe frank at ...9761...
Wed Sep 7 11:19:29 EDT 2005

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


Ciscogate: Shame on Cisco. Double-Shame on ISS.
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