[pptp-server] routing problem with pppd

[Michael Rauscher]

Okay, I believe I've got a simple routing problem but I don't know how to
fix it. Please help!!!

I'm trying to setup a pptp vpn between a Win98 SE client (I-net connected
through dialout to an ISP) and a Linux PoPToP server which is on a LAN 
(also I-net connected through dialout to an ISP).

To test everything I've got the PoPToP server (RH6.2), and the Win98 SE
client, both on a 192.168.00 LAN. I can VPN to the linux server and it works
slick (thanx to lots of help from searching this list, the howtos and much
head-banging). But, when I try to connect via the ISP link, the server isn't
responding.

I've got the server doing demand dialing, and when I get the IP address from
its ppp0 interface, I use that to try to connect with the Win client. Seems
simple, but this routing thing is driving me crazy. Yep, I'll admit it --
I'm a neophyte and am trying to learn all this stuff on my own, but I'd
really appreciate it if someone could take a look at this output and give me
a clue before I lose any more hair. BTW, ipchains is wide open for purposes
of the testing; I' pretty sure that's not the problem. Check out the
messages from the log below related to the routes and proxyarp.

Here's my options file:

#/etc/ppp/options
+chapms
+chapms-v2    
mppe-40
mppe-128    
mppe-stateless    
proxyarp
demand
debug
idle 120
ipcp-accept-remote
ipcp-accept-local
mru 1500
lock
noauth
defaultroute
user powerplt
remotename *
modem 57600 crtscts
connect '/usr/sbin/chat -v -f /etc/ppp/dialout-chat'

I start pppd like this:

<pppd /dev/modem file /etc/ppp/options.dialout :dns-server>

<tail /var/log/messages>

May 22 18:58:28 fairbanks kernel: CSLIP: code copyright 1989 Regents of the
University of California 
May 22 18:58:28 fairbanks kernel: PPP: version 2.3.10 (demand dialling) 
May 22 18:58:28 fairbanks kernel: PPP line discipline registered. 
May 22 18:58:28 fairbanks kernel: registered device ppp0 
May 22 18:58:57 fairbanks pppd[745]: pppd 2.3.10 started by root, uid 0
May 22 18:58:57 fairbanks pppd[745]: Using interface ppp0
May 22 18:58:57 fairbanks pppd[745]: not replacing existing default route to
eth0 [192.168.0.1]
May 22 18:58:57 fairbanks pppd[745]: Cannot determine ethernet address for
proxy ARP
May 22 18:58:57 fairbanks pppd[745]: local  IP address 10.64.64.64
May 22 18:58:57 fairbanks pppd[745]: remote IP address xxx.xxx.121.2

<route>

Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use
Iface
dns             *               255.255.255.255 UH    0      0       0 ppp0
fairbanks       *               255.255.255.255 UH    0      0        0 eth0
192.168.0.0     *               255.255.255.0   U     0      0        0 eth0
127.0.0.0       *               255.0.0.0       U     0      0        0 lo
default         gateway         0.0.0.0         UG    0      0        0 eth0

mike rauscher





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