[pptp-server] Setting up PoPToP behind masq firewall

[John P]

Hi

I have PoPToP running on a RedHat 7.0 server. The server runs behind a Linux
firewall which masquerades the internal network out on one IP address. Port
1723 is forwarded to the RedHat server as is protocol 53. The server is
running kernel '2.2.16-22 #17 SMP'

When I connect from my Win98 SE machine, I get the following in the logs:
Oct 13 17:24:14 pluto pppd[2738]: pppd 2.4.0 started by root, uid 0
Oct 13 17:24:14 pluto pppd[2738]: Using interface ppp0
Oct 13 17:24:14 pluto pppd[2738]: Connect: ppp0 <--> /dev/pts/3
Oct 13 17:24:44 pluto pppd[2738]: LCP: timeout sending Config-Requests
Oct 13 17:24:44 pluto pppd[2738]: Connection terminated.
Oct 13 17:24:44 pluto pppd[2738]: Exit.
Oct 13 17:24:44 pluto pptpd[2737]: GRE: read(fd=4,buffer=804da00,len=8196)
from PTY failed: status = -1 error = Input/output error
Oct 13 17:24:44 pluto pptpd[2737]: CTRL: PTY read or GRE write failed
(pty,gre)=(4,5)
Oct 13 17:24:44 pluto pptpd[2737]: CTRL: Client 122.146.136.129 control
connection finished
[root at pluto ipv4]#