Transparent proxy using IPFW

kalpin at kalpin at
Mon Nov 30 11:02:58 UTC 2009

Dear All,

Is it possible to do like my requirement below?

1. Setup portfwd in my server listen on port 555 and forward all
connection through this port to another server with same port or different
2. All client which connected through this port, then remote server which
landed to the end can see the client's IP.


Client IP:
FreeBSD IP: listen on port 555
Remote Server IP:

Client IP connect to on port 555, and then FreeBSD forward it
to with same port or different port. Server with IP can see Client's IP

I am using FreeBSD 7.2-stable.

Thank you

Kalpin Erlangga Silaen

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