Hi,
I'm a new user of tcpreplay. I am trying to use it to test a firewall, much as
in the example you have on the site. The problem I have is that tcpprep seems
to be classifying my traffic the wrong way round consistently. I tried just
swapping over the values for server and client, but tcpreplay then sends out
the client traffic after the server traffic, so I get my ack before my request,
which the firewall doesn't like very much! I am using the following script to
generate the pcap file:
tcpprep -i ${CAP_UNICAST} -p -o ${CACHE}
# rewrite -- works but server and client the wrong way round
tcprewrite -c ${CACHE} --enet-dmac=${FW_MAC_EXT},${FW_MAC_INT}
--enet-smac=${SERVER_MAC},${CLIENT_MAC} --endpoints=${SERVER_IP}:${CLIENT_IP}
-i ${CAP_UNICAST} -o ${PCAPOUT}
If I then view the pcap file created, the macs assigned are all the wrong way
round. I tried just swapping over the macs, which works to a point, in that the
pcap file then looks right, but it seems that because the traffic has been
classified as server/client tcpreplay sends it in a specific order, rather than
the order on the file.
(I run replay with the command: tcpreplay -M 100 -l 0 -i $SERVER_INT -I
$CLIENT_INT -c $CACHE $PCAPOUT). I've read and re-read the man pages, and as
far as I can see this is correct, however I could well have made a mistake. Is
it glaringly obvious to anyone what I've done wrong?
Thanks,
Cliff.
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