Re: IPTables is not forwarding traffic for PPTP or VNC

[Julian Gomez <kluivert () tm net my>]

Alex L wrote:

> Hi all !
>
> I'm new on this list...
>
> I've got a problem with IPTables ( Fedora Core 2 ) rules which are
> just not working at all ..
>
> I've added PREROUTING rules to forward incoming traffic to a Server.
> SMTP forwarding is working, but not PPTP + GRE or VNC !
>
> I thought, it might be a limitation in the FORWARD so I set the
> default POLICY to ALLOW instead of DROP and removed all rules which
> would apply to PPTP or GRE to make sure they don't interfere.
>
> But still - it just didn't work ..
>
> Does anybody know if I need an update of IPTables ? I actually
> installed the latest stable version and compilation went fine.
>  

For PPTP, you need to ensure that the pptp_conntrack_* modules are 
loaded. Depending on
which distribution you use, they might not be readily available; so 
you'll need to recompile
from source. At least, that's how it was when I last played with it 
about 2-3 years ago ;-)

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