PLDWWW: Docs/port forwarding

[Mateusz Korniak]

Author: Mateusz Korniak   Date: Mon Apr 26 11:34:35 2010 GMT
Module: PLDWWW   URL: http://www.pld-linux.org/Docs/port_forwarding
---- Log message:
my notes about portforward

---- Page affected: Docs/port forwarding

---- Diffs:

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The comment on the change is:
my notes about portforward

New page:
== Contents ==

[[TableOfContents]]

== Problem ==
We want on host 11.1.1.111 connections on port 11111 to be forwareded to host 2.2.22.222 to port 2222.

== Simple port forwarding using using portfwd ==
On host 11.1.1.111 install:

{{{
poldek:/all-avail> install portfwd-0.29-1.i686 
}}}
Edit '/etc/portfwd.cfg' and add:
{{{
/* Comment what kind of forward it is */
 tcp { 11111 { => 2.2.22.222:2222 } }
}}}

Enable incoming connections to 11.1.1.111:11111 if you are using iptables firewall:
{{{
iptables -I INPUT -p tcp --dport 11111 -j ACCEPT
}}}

and perhaps outgoing connections to 2.2.22.222:2222.

Start '/etc/init.d/portfwd', set it to start up permanently ('ntsysv').

Check forwarded traffic going:
{{{
tcpdump -i eth1 host 2.2.22.222 and port 2222
}}}