[pptp-server] client problem

Scott Venier scottven at umich.edu
Thu Mar 2 00:35:45 CST 2000


Hello.  I'm having a problem with the pptp client.  I'm trying to use it
on a linux machine to connect to a winnt server.  If I use a windows 98
pptp client, I can connect just fine, so I know the route for GRE packets
is good in both directions.

I've pasted in the useful portions of syslog output below.  Using a packet
sniffer, I can confirm that the TCP controll channel gets established
correctly(?) (ethereal shows success in its disection of the TCP packets I
can past that too if you want to see it) and GRE packets are going onto
the wire.

I'm not getting any reply from the pptp server.  pppd complains that it's
LCP requests time out.

I've tried kernel 2.2.5-15 and 2.2.14, pppd version 2.3.10 with the
mschap/mppe patch applied.  I grabbed the rc4 files from SSLeay version
0.6.6b and I'm using pptp-linux-1.0.2.  I've tried just about every
possible combination of putting +chapms, +chapms-v2, mppe-40, mppe-128,
and mppe-stateless on the command line.  My options file just contains
lock and noauth.  I have my nt domain account and password in
/etc/ppp/chap-secrets.  But I don't think it's an auth problem, since I'm
not even getting an LCP Config Reply.

Anyone have any suggestions?

Thanks.

Scott

syslog snippets:
Mar  2 00:50:30 morph (unknown)[916]:
log[pptp_dispatch_ctrl_packet:pptp_ctrl.c:531]: Client connection
established.
Mar  2 00:50:31 morph (unknown)[916]:
log[pptp_dispatch_ctrl_packet:pptp_ctrl.c:637]: Outgoing call established. 
Mar  2 00:50:32 morph pppd[919]: pppd 2.3.10 started by root, uid 0
Mar  2 00:51:53 morph kernel: ppp_ioctl: set dbg flags to 70000 
Mar  2 00:51:53 morph kernel: ppp_ioctl: set flags to 70000 
Mar  2 00:50:32 morph pppd[919]: Using interface ppp0
Mar  2 00:50:32 morph pppd[919]: Connect: ppp0 <--> /dev/ttya0
Mar  2 00:51:53 morph kernel: ppp_tty_ioctl: set xasyncmap 
Mar  2 00:51:53 morph kernel: ppp_tty_ioctl: set xmit asyncmap ffffffff 
Mar  2 00:51:53 morph kernel: ppp_ioctl: set flags to 70000 
Mar  2 00:51:53 morph kernel: ppp_ioctl: set mru to 5dc 
Mar  2 00:51:53 morph kernel: ppp_tty_ioctl: set rcv asyncmap ffffffff 
Mar  2 00:50:32 morph pppd[919]: sent [LCP ConfReq id=0x1 <asyncmap 0x0>
<auth chap m$oft> <magic 0xd8f0a24b> <pcomp> <accomp>]
Mar  2 00:50:32 morph pppd[919]: Timeout 0x8050164:0x8077400 in 3 seconds.
***this is repeated 9 more times*****
Mar  2 00:52:23 morph pppd[923]: LCP: timeout sending Config-Requests 
Mar  2 00:52:23 morph pppd[923]: Connection terminated.
Mar  2 00:52:23 morph kernel: ppp: channel ppp0 closing. 
Mar  2 00:52:24 morph pppd[923]: Exit.





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