redir

Description: Redirect TCP connections

It can run under inetd or stand alone (in which case it handles
multiple connections). It is 8 bit clean, not limited to line
mode, is small and light. Supports transparency, FTP redirects, http
proxying, and bandwidth limiting.
.
redir is all you need to redirect traffic across firewalls authenticate
based on an IP address etc etc. No need for the firewall toolkit. The
functionality of inetd/tcpd and ""redir"" will allow you to do everything
you need without screwy telnet/ftp etc gateways. (I assume you are running
IP Masquerading of course.)
.
Homepage: http://sammy.net/~sammy/hacks

Usage:

# redir --lport=123 --cport=21 --caddr=aaa.bbb.ccc.ddd --syslog --ftp=both &
--
kuku~~~