[pptp-server] PPTP Probs

[Robert Dege]

This is my current setup:

                            Linux
     PPTP --> Internet --> Masq and --> PPTP Server &
    Client                 Firewall	Local Intranet


Here's what I've done so far:

On my PPTP Server		On My Firewall
====================		===============
Installed PPP-2.3.11		Implemented ALL IP-Chains in Setup Guide
Installed PPTP-1.1.2		Patched 2.2.16 kernel with ip_masq_pptp


My Problem is that I am still getting Connection timeouts from my pptp
server.
debugging info:

Dec 20 10:40:01 quark kernel: PPP: ppp line discipline successfully
unregistered 
Dec 20 10:41:35 quark pptpd[7463]: CTRL: Client 12.19.228.57 control
connection started
Dec 20 10:41:35 quark pptpd[7463]: CTRL: Starting call (launching pppd,
opening GRE)
Dec 20 10:41:36 quark kernel: CSLIP: code copyright 1989 Regents of the
University of California 
Dec 20 10:41:36 quark kernel: PPP: version 2.3.11 (demand dialling) 
Dec 20 10:41:36 quark kernel: PPP line discipline registered. 
Dec 20 10:41:36 quark kernel: registered device ppp0 
Dec 20 10:41:36 quark pppd[7464]: pppd 2.3.11 started by root, uid 0
Dec 20 10:41:36 quark pppd[7464]: Using interface ppp0
Dec 20 10:41:36 quark pppd[7464]: Connect: ppp0 <--> /dev/pts/1
Dec 20 10:42:06 quark pppd[7464]: LCP: timeout sending Config-Requests 
Dec 20 10:42:06 quark pppd[7464]: Connection terminated.
Dec 20 10:42:06 quark pppd[7464]: Exit.
Dec 20 10:42:06 quark pptpd[7463]: Error reading from pppd: Input/output
error
Dec 20 10:42:06 quark pptpd[7463]: CTRL: GRE read or PTY write failed
(gre,pty)=(6,5)
Dec 20 10:42:06 quark pptpd[7463]: CTRL: Client 12.19.228.57 control
connection finished

As you can see, it gets an LCP timeout.  I thought that this was because
of the GRE packets not getting through.  That's when I patched the
kernel with the pptp patch.
 Now here's the kicker.  When I receive a PPTP session connection, the
firewall doesn't load the pptp module.  Can one of the IP chain rules
from the Setup guide be causing some problems?



Here is the log from the firewall/ip_masq server:
Dec 20 11:41:35 firewall kernel: Packet log: input ACCEPT eth1 PROTO=6
x.x.228.57:1038 x.x.228.50:1723 L=48 S=0x00 I=48384 F=0x4000 T=128 SYN
(#2) 


Any help is appreciated.

-Rob