Transparent proxying support for Netfilter

This module implements transparent proxying functionality in Netfilter. It
can be used to implement user-space transparent proxies for complex
protocols over TCP/UDP. A table named 'tproxy' is implemented, which takes
care of dynamically setting up NAT mappings for the appropriate
connections.

To support transparent proxying in the iptables rulesets, the 'tproxy'
match matches all packets related to proxied connections, and the 'TPROXY'
rule can be used to redirect new connections to the proxy.

A more complete package with some documentation and examples can be
downloaded from http://www.balabit.com/downloads/tproxy/linux-2.4/
