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Date: Fri, 28 Nov 2008 14:24:27 +0800
From: Fbsd1 <fbsd1@a1poweruser.com>
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To: Bernt Hansson <bernt@bah.homeip.net>
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Subject: Re: pf or ipf rules to allow p2p Limewire through
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Bernt Hansson wrote:
> Fbsd1 said the following on 2008-11-27 09:56:
>> What pf or ipf firewall keep-state rules needed to allow p2p 
>> application such as limewire through? Using same firewall rules as in 
>> handbook example.
> 
> Put this in your /etc/ipnat.rules
> 
> rdr rl0 0.0.0.0/0 port port# -> internal-ip port port# tcp
> rdr rl0 0.0.0.0/0 port port# -> internal-ip port port# udp
> 
> 
> 
> 


How about explaining just why this is going to allow p2p limewire work?

I think you are missing the fact that limewire does not use dedicated 
port numbers. Every session uses different port numbers and the remote 
computers come in on different hight port numbers.