[CentOS] Weird TCP problem

Gordon Messmer yinyang at eburg.com
Fri Sep 5 19:46:51 UTC 2008


Florin Andrei wrote:
> 
> If you were running tcpdump in promiscuous mode, re-run the tests with 
> it non-promiscuous. Just to make sure the SYN is actually received by 
> that system.

I ran the test again with "tcpdump -i eth0 -p" and then thinking better 
of it, with "tcpdump -i any".  In both cases I was able to replicate the 
problem.  Even with "-i any" I see the incoming SYN packets and no 
SYN+ACK reply.


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