[pptp-server] URGENT-- need help (Linux pptp server/win clients through the fir ewall)

Jandeep Kang jandeep at interspeed.com
Fri Mar 10 10:19:51 CST 2000


Hi, 
We have set up the Linux pptp server and have win 98/ NT clients. The server
sits behind a firewall (also linux). I can connect to the Linux PPTP server
using NT/98 from within the network but can't do it through the firewall. We
have the tcp port 1723 redirected through the firewall to the PPTP server
and are forwarding the GRE protocol using Ipfwd to the linux PPTP server. I
can see the Ipfwd in action using the debug mode but I can't establish a
connection. The excerpts from log on the linux box says the following:

pppd[1208] : sent [LCP ConfReq id=0x1 <asyncmap 0x0> <auth chap 81> <magic
0xf2ab6569> <pcomp> <accomp>]
last message repeated 9 times
pppd[1208] : LCP: timeout sending Config-Requests
pppd[1208]: Connection terminated.
pppd[1208]: Exit.
pptpd[1207] : GRE: read(fd=4, buffer=804d7c0, len=8196) from PTY failed:
status = -1 error = input/output error
pptpd[1207] : CTRL: PTY read or GRE write failed (pty,gre)=(4,5)
pptpd[1207] : CTRL: Client x.x.x.x control connection finished

the client is a win98 SE.
where is the problem? Is it a problem with PPP implementation on Linux box?
I would really appreciate it if someone who has a similar configuration
could shed some light on it. 
Thanks a lot.
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