From mboxrd@z Thu Jan  1 00:00:00 1970
From: marcus <marcus@lanhelp.com.br>
Subject: Redirecting internal tcp connections
Date: Fri, 15 Apr 2005 14:12:59 -0300
Message-ID: <425FF61B.9090008@lanhelp.com.br>
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Hi, I have a lpd server on a remote host that ISP blocks port 515. I try 
to use something like "lpr -Plp@remotehost.com:900" but lprng doenst 
seems to recognize the port argument. So, I think to use iptables to 
redirect TCP requests on port 515 to port 900 but I dont know how. I've 
tried the following:

#iptables -A OUTPUT -p tcp --dport 515 -j REDIRECT --to-port 900

This gives me a "iptables: Invalid argument"

Any ideas?