Re: how to connect to VPN server using IPTABLES nat

["Buddy wu" <ejournal4me@gmail.com>]

I'm puzzled with the IPTABLES
when I set the default Policy of INPUT and FORWARD chains, I can
established the vpn connection. But When I use the below command ,the
vpn connection can't be established
iptables -A INPUT -d 218.0.0.0 -j ACCEPT
iptables -A FORWARD -d 218.0.0.0 -j ACCEPT
WHY? what other rules should be added?


2006/3/2, Rob Sterenborg <rob@sterenborg.info>:
>
> On Thu, March 2, 2006 11:46, Buddy wu wrote:
> >    I DON'T mean there is a VPN serving making from linux.
> >    The fact is that:
> >    I set up a VPN server using windows server(IP:192.168.1.1) and it
> > is behind a Linux server which is using iptables for nat
> >    iptables -A PREROUTING -d 218.0.0.0 -j DNAT --to 192.168.1.1
> >
> >    but I can't establish the VPN connection from out(etc IP address is
> > 218.10.0.1, I have tested that I can connect to other service such as
> > web(port 80). How can I establish the VPN connection ? Is there need
> > some setting in IPTABLES?
>
> If it's Windows then I suspect it's a PPTP server.
> For this to work you have to forward both 1723/tcp and the gre (47) protocol.
> Also, you need the pptp conntrack/nat modules for which you may have to
> recompile the kernel and iptables.
>
>
> Gr,
> Rob
>
>
>
>