Hi Jason,
If I remember correctly, when we set this up, we had to set the gre rule
without any ports (just put a dash in the port box).
If this does not work, a look at /var/log/messages should give you a good
idea if the firewall is stopping your packets and why. HTH

Best regards,
Patrick

-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Jason
Ellison
Sent: Friday, August 13, 2004 7:33 AM
To: [EMAIL PROTECTED]
Subject: [Security Firewall] Problems with PPTP


    I am trying to setup a single adapter PPTP VPN server behind my
MNF.  From what I understand about PPTP I need to open TCP port 1723 and
also allow Proto 47, GRE, in order for the vpn to operate correctly.  My
problem is that every time I attempt to create a rule to allow gre
traffic the firewall sets all the default policies to DROP and doesn't
add any rules.  I setup a test firewall with a fresh install of MNF and
I still have the same problem.  The rules table looks like this:

Result Client Zone Server Zone Protocol Port(s) Forward
1  ACCEPT fw wan tcp+udp 53
2  ACCEPT dmz wan udp 53
3  ACCEPT lan wan udp 53
4  REJECT wan fw tcp 113
5  ACCEPT lan fw tcp 22
6  ACCEPT lan fw tcp 8443
7  ACCEPT fw lan icmp 8
8  ACCEPT lan fw icmp 8
9  ACCEPT lan dmz icmp 8
10  ACCEPT dmz lan icmp 8
11  ACCEPT dmz fw icmp 8
12  ACCEPT fw dmz icmp 8
13  ACCEPT lan fw udp 53
14  ACCEPT wan:10.1.1.99 lan tcp 0:65535
15  ACCEPT:info wan lan gre 0:65535

The last rule is the one that gives it problems.  The default Policies
are to DROP or REJECT everything except outgoing packets.  If anyone has
successfully setup a PPTP firewall behind a MNF please let me know.

Jason Ellison



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