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tcpdump only captures incoming packets in a tcp connection
From: wen lui <esolvepolito () gmail com>
Date: Thu, 18 Apr 2013 02:17:00 +0200
I wrote a program based on tcp and put it on a PlanetLab node A. The
program initiates a tcp connection with another host B(tcp listening port
I used tcpdump on planetlab node to capture packets without any filter
tcpdump - i eth0
I notice all the packets I captured are only incoming packets, the
outgoing packets like TCP SYN packet and TCP ACK packet are missing.
On Host B I also use tcpdump and I can see the TCP SYN and ACK from A
I tried wget and udp sending on the Planetlab node and I can capture
outgoing packets. So this means tcpdump on Planetlab node can be infuenced
by specific program?
what are potential reasons for this? thanks!
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- tcpdump only captures incoming packets in a tcp connection wen lui (Apr 18)