[pptp-server] pptp through firewall

Christopher Kalos ckalos at gothambroadband.com
Thu Jul 19 16:13:33 CDT 2001


Okay, here goes... Sorry about the confusion, I misinterpreted "remote end"
as "client."

1) Cut/Paste of /var/log/messages for pptp connection from remote.
Jul 19 12:11:29 thing pppd[17845]: pppd 2.3.11 started by root, uid 0
Jul 19 12:11:29 thing pppd[17845]: Using interface ppp0
Jul 19 12:11:29 thing pppd[17845]: Connect: ppp0 <--> /dev/pts/0
Jul 19 12:11:32 thing pppd[17845]: CHAP peer authentication succeeded for
vpnuser
Jul 19 12:11:36 thing pppd[17845]: found interface eth0 for proxy arp
Jul 19 12:11:36 thing pppd[17845]: local  IP address 192.168.200.240
Jul 19 12:11:36 thing pppd[17845]: remote IP address 192.168.200.242

2) Cut/Paste of "ifconfig ppp0" after connection is brought up.
ppp0      Link encap:Point-to-Point Protocol
          inet addr:192.168.200.240  P-t-P:192.168.200.242
Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:72 errors:0 dropped:0 overruns:0 frame:0
          TX packets:22 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:10


3) Cut/Paste of "netstat -rn"
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt
Iface
192.168.200.242 0.0.0.0         255.255.255.255 UH        0 0          0
ppp0
192.168.200.0   0.0.0.0         255.255.255.0   U         0 0          0
eth0
0.0.0.0         192.168.200.1   0.0.0.0         UG        0 0          0
eth0

-----Original Message-----
From: pptp-server-admin at lists.schulte.org
[mailto:pptp-server-admin at lists.schulte.org]On Behalf Of Cowles, Steve
Sent: Thursday, July 19, 2001 4:38 PM
To: pptp-server at lists.schulte.org
Subject: RE: [pptp-server] pptp through firewall


>
> 	It doesn't seem to help.
> New settings:
> ====
> localip 192.168.200.240
> remoteip 192.168.200.241-254
> ====
>
> At least my first boneheaded error is out of the way, but I'm
> still getting the same exact problems.
>
> CK

Best I can tell from your post - your problem is probably related to either
routing and/or the proxyarp function is not working when you establish your
connection. Could also be ipchain/iptable related. Please include the
following:

1) Cut/Paste of /var/log/messages for pptp connection from remote.
2) Cut/Paste of "ifconfig ppp0" after connection is brought up.
3) Cut/Paste of "netstat -rn"

Steve Cowles
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