enjoying salad since 1978.

Wednesday, July 30, 2008

So I don't forget it.

A cheesy generic tcp proxy I found cruising the webs built out of netcat, fifos, and tee:

$ mkfifo backpipe
$ sudo nc -l 80 0<backpipe | tee -a inflow | nc localhost 8080| tee -a outflow 1>backpipe

This way you can also look at inflow and outflow to see what the actual contents were of the transaction.

posted by Steve Jenson at 1:33 PM

1 Comments:

Blogger Bruno Vernay said...

On Red Hat, with netcat verion 1.10-22 you will need a "-p" before the port :
nc -l -p 1234 0<backpipe | tee -a flow.txt | nc 194.89.89.89 4321 | tee -a flow.txt 1>backpipe

And using the same pipe for in and out, you get the request and responses in order in the same file.

See also tcpdump and tshark.

5:39 AM

 

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