From mboxrd@z Thu Jan  1 00:00:00 1970
From: Brent Clark <bclark@eccotours.co.za>
Subject: Re: Redirecting incoming packets to other port
Date: Wed, 11 Oct 2006 10:48:28 +0200
Message-ID: <452CAFDC.3070909@eccotours.co.za>
References: <c936c6b70610110109v73453362h65b8e34d6771dadd@mail.gmail.com>
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Holger Kinkelin wrote:
> Hello everybody
> 
> how can I redirect packets sent to my computer to another port?
> 
> I tried: iptables -A PREROUTING -t nat -p udp --dport 5060 --sport
> 5060 -j DNAT --to-destination 192.168.0.21:5063
> 
> This rule is accepted but doesn't do anything. There are no other
> rules that could cause side effects.
> 
> Regards,
> Holger


http://www.linuxtopia.org/Linux_Firewall_iptables/x4508.html

HTH

Kind Regards
Brent Clark