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Re: Logs: Many hits with source port of 80

From: Russell Fulton <r.fulton(at)auckland.ac.nz>
Date: Sun Dec 15 2002 - 21:13:53 EST

On Fri, 2002-12-13 at 23:05, Byrne Ghavalas wrote:
> Hi All,

I've seen this sort of thing for years and have tracked it back to content switches and load balancers the don't quite work some of the time. The sort of thing that happens is that the switch and the back end web server get out of synch some how and you get odd RST or ACK packets being sent back to the client up to 5 minutes after the actual session has finished.

If you were running Argus <www.qosient.com> and thus had a complete audit trail off your traffic then you would be able to see the original out bound sessions to 194.78.225.36:80 and then the belated ACK, FIN or RST coming in with the same port numbers

-- 
Russell Fulton, Computer and Network Security Officer
The University of Auckland,  New Zealand

"It aint necessarily so"  - Gershwin


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Received on Mon Dec 16 13:00:59 2002

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