iptables and pptp vpn
 

I want to allow pptp traffic through my smoothwall firewall. Smoothwall uses iptables. I was told this was what I had to enter for it to work. “iptables -t nat -A portfw -p 47 -i eth1 -j DNAT --to 172.16.0.2” Eth1 is my internet connection. 192.16.0.2 is my windows vpn server. I also forwarded port 1723. But it won’t work. Is there an error in the command for forwarding protocol 47.

What's the error message?
protocol 47 is correct, but "portfw" may not be a valid chain.
It should be in the prerouting chain.

I don't no where to find the error msg.I put the command at the end of this file. /etc/rc.d/rc.network. Should it be somewhere ells.

Unless you are running SmoothWall GPL 2.0 beta, you are running a 2.2.x series kernel and ipchains.

For information on how to forward ports etc. for Smoothwall GPL 1.0 look here.

I am running gpl2b4. That is the one i need help with.

try typing in that iptables line manually and see if any errors come up.

http://www.linuxquestions.org/questi...ht=protocol+47

Look there, it might help.