[pptp-server] Allowing GRE packets to pass through nat/ipfw firewall

[Charles Peters - Tech Support]

Greetings:

I have configured a VPN using poptop to allow remote users to 
connect to the corporate lan server, but have a problem.  Most of 
these users are behind a Freebsd 4.0 gateway/router running nat 
and ipfw.  As I understand, only one ip address is allowd to pass 
GRE packets through the gateway.  I have accomplished this by 
creating /etc/natd.conf as follows:

	interface ep0
	unregistered_only yes
	pptpalias 192.168.0.7

This work fine, but only for one machine.  Is there any way to allow 
GRE packets from all machines to pass through the gateway.

Thanks,

Charles


Charles Peters
mailto:support at tecpro.com