ipfw and smtp port rewriting

[Oleksandr Samoylyk]

Paolo Pisati wrote:
> On Sun, May 18, 2008 at 09:51:26PM +0300, Oleksandr Samoylyk wrote:
>> Hello freebsd-ipfw,
>>
>> I'd like to make smtp port rewriting for any destination by means of ipfw.
>>
>> With iptables I just used this rule in order to achieve this functionality:
>>
>> iptables -t nat -A PREROUTING -i ppp+ -p tcp --dport 2525 -j DNAT 
>> --to-destination :25
> 
> ipfw nat 123 config redirect_port tcp YOURIP:2525 25 
> ipfw add nat 123 tcp from any to any
> 
> or something along the line.
> 

Will it work for any destination?

-- 
  Oleksandr Samoylyk
  OVS-RIPE