Re: PPTP port forwarding

[Wim Ceulemans <wim.ceulemans@able.be>]

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Antony

Ok, thanks, but this setup with the NATed router worked with kernel 
2.2.17, so where is the difference?

Regards
Wim

Antony Stone wrote:

>On Thursday 19 February 2004 11:53 am, Wim Ceulemans wrote:
>
>  
>
>>Hi
>>
>>We have noticed a problem with PPTP forwarding not working as it should.
>>
>>We have a system on kernel 2.4.24 with latest pom and iptables 1.2.9.
>>There is a port forwarding PPTP to a windows 2000 server behind the
>>firewall.
>>
>>We noticed that when someone connects with PPTP the connection is closed
>>after 3 to 4 minutes. This problem only occurs if there is a router in
>>nat mode between the firewall and the internet. If the public ip is on
>>the firewall then this problem does not occur.
>>    
>>
>
>You cannot operate PPTP across a NATted connection without a special helper 
>module (hence your need for pom as stated above).
>
>If the other nat-mode router does not have a suitable helper for PPTP then you 
>can't use this combination.
>
>Regards,
>
>Antony.
>
>  
>


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