[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[suse-security] PPP-Probleme mit PPTPD und Mac Airport



Hallo, Liste,

 i got some problems with mac-os 10 clients on my poptop-server.
windows 2000 und XP are working well: fast and stable connection, while the mac doesnt get to the ppp-connection properly.

mac-client (with the internal pptp-client, btw) gets an IP from the server, then connects via pptp, than comes an LCP ConfReq-Message (gre-pakete...!?), die kommen auch beim client an; der sagt dann

Jun 23 13:08:49 access pppd[5233]: sent [LCP ConfReq id=0x1 <mru 1450> <asyncmap 0x0> <auth chap 81> <magic 0x68c8b366> <pcomp> <accomp>]

at this point theres a break for 30 seconds... than follows:

 Jun 23 13:09:16 access last message repeated 9 times
 Jun 23 13:09:19 access pppd[5233]: LCP: timeout sending Config-Requests
 Jun 23 13:09:19 access pppd[5233]: Connection terminated.
 Jun 23 13:09:19 access pppd[5233]: Exit.
Jun 23 13:09:19 access pptpd[5232]: Error reading from pppd: Input/output error Jun 23 13:09:19 access pptpd[5232]: CTRL: GRE read or PTY write failed (gre,pty)=(6,5) Jun 23 13:09:19 access pptpd[5232]: CTRL: Client 10.28.52.198 control connection finished
 Jun 23 13:09:19 access pptpd[5232]: CTRL: Exiting now

with tcpdump I can see, that the client receives packets:

07:42:54.513953 IP 10.28.52.1 > 10.28.52.197: call 1361 seq 7 gre-ppp-payload 07:42:54.513953 IP 10.28.52.1 > 10.28.52.197: call 1361 seq 8 gre-ppp-payload

after the 10th or so payload the connection shuts down from the servers side:

Jun 23 13:09:16 access last message repeated 9 times
Jun 23 13:09:19 access pppd[5233]: LCP: timeout sending Config-Requests
Jun 23 13:09:19 access pppd[5233]: Connection terminated.
Jun 23 13:09:19 access pppd[5233]: Exit.
Jun 23 13:09:19 access pptpd[5232]: Error reading from pppd: Input/output error Jun 23 13:09:19 access pptpd[5232]: CTRL: GRE read or PTY write failed (gre,pty)=(6,5) Jun 23 13:09:19 access pptpd[5232]: CTRL: Client 10.28.52.198 control connection finished
Jun 23 13:09:19 access pptpd[5232]: CTRL: Exiting now

tcpdump on the server says:

14:56:15.954532 access.hfk-bremen.de > 10.28.52.198: gre [KSv1] ID:0995 S:8 ppp: Conf-Req(1), MRU=1450, ACCM=00000000, Auth-Prot CHAP/MSCHAPv2, Magic-Num=1a660c17, PFC, ACFC (D

and then nothing more....

system server: suse 9, poptop 1.1.2, pppd2.4.2, kernel 2.4.21, ppp-module loaded.

system client: mac powerbook w/ internal airport extreme, pptp-client by Apple (?).

 firewall is shut down on both sides.

 options.ppp0:

 lock
 debug
 auth
 +chap
 -chapms
 +chapms-v2
 mppe-40
 mppe-128
 mppe-stateless
 asyncmap 0
 proxyarp
 mru 1450
 mtu 1450
 ipcp-accept-local
 ipcp-accept-remote

thanx in advance for help!

greetings

 lars behrens


--
Check the headers for your unsubscription address
For additional commands, e-mail: suse-security-help@xxxxxxxx
Security-related bug reports go to security@xxxxxxx, not here