RE: TTL LIMIT Exceeded

["Mark E. Donaldson" <markee () bandwidthco com>]

Any chance this could be caused by a router loop?

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From: snort-users-admin () lists sourceforge net
[mailto:snort-users-admin () lists sourceforge net] On Behalf Of Sheahan, Paul
Sent: Thursday, March 25, 2004 12:53 PM
To: snort-users () lists sourceforge net
Subject: [Snort-users] TTL LIMIT Exceeded



I'm seeing "(spp_stream4) TTL LIMIT Exceeded  {TCP}" alerts in Snort.

 

Occasionally I see web requests arriving at my web server with a TTL of 5.
Then the following packets decrement down to 4, 3, 2, 1, then zero, which
generates a TTL LIMIT EXCEEDED. Just curious if anyone knows what the intent
would be in purposely send web requests with a low TTL to generate this
message?

 

Thanks