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Old 06-03-2005, 03:42 PM   #1
deus1
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Registered: Jan 2005
Distribution: Suse 9.1 pro
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poptop vpn server problem


I've just tried to install the poptop vnp server on my linux suse 9.1 pro system. I'm using basic config files delivered with the installation. I haven't changed anything (which causes probably the problem). Someone tried to connect to my vpn server, but he got the next message:

Error 741: The local computer does not support the required data encryption type.

Probably the server is causing this problem. I've copied the next part from the log: /var/log/messages :

Code:
Jun  3 22:29:16 linux pptpd[5768]: MGR: Launching /usr/sbin/pptpctrl to handle client
Jun  3 22:29:16 linux pptpd[5768]: CTRL: local address = 10.0.0.153
Jun  3 22:29:16 linux pptpd[5768]: CTRL: remote address = 10.0.0.155
Jun  3 22:29:16 linux pptpd[5768]: CTRL: pppd speed = 115200
Jun  3 22:29:16 linux pptpd[5768]: CTRL: pppd options file = /etc/ppp/options
Jun  3 22:29:16 linux pptpd[5768]: CTRL: Client 145.53.148.27 control connection started
Jun  3 22:29:16 linux pptpd[5768]: CTRL: Received PPTP Control Message (type: 1)
Jun  3 22:29:16 linux pptpd[5768]: CTRL: Made a START CTRL CONN RPLY packet
Jun  3 22:29:16 linux pptpd[5768]: CTRL: I wrote 156 bytes to the client.
Jun  3 22:29:16 linux pptpd[5768]: CTRL: Sent packet to client
Jun  3 22:29:17 linux pptpd[5768]: CTRL: Received PPTP Control Message (type: 7)
Jun  3 22:29:17 linux pptpd[5768]: CTRL: 0 min_bps, 1525 max_bps, 32 window size
Jun  3 22:29:17 linux pptpd[5768]: CTRL: Made a OUT CALL RPLY packet
Jun  3 22:29:17 linux pptpd[5768]: CTRL: Starting call (launching pppd, opening GRE)
Jun  3 22:29:17 linux pptpd[5768]: CTRL: pty_fd = 5
Jun  3 22:29:17 linux pptpd[5768]: CTRL: tty_fd = 6
Jun  3 22:29:17 linux pptpd[5769]: CTRL (PPPD Launcher): Connection speed = 115200
Jun  3 22:29:17 linux pptpd[5769]: CTRL (PPPD Launcher): local address = 10.0.0.153
Jun  3 22:29:17 linux pptpd[5769]: CTRL (PPPD Launcher): remote address = 10.0.0.155
Jun  3 22:29:17 linux pptpd[5768]: CTRL: I wrote 32 bytes to the client.
Jun  3 22:29:17 linux pptpd[5768]: CTRL: Sent packet to client
Jun  3 22:29:17 linux pppd[5769]: pppd 2.4.2 started by root, uid 0
Jun  3 22:29:17 linux pppd[5769]: Using interface ppp0
Jun  3 22:29:17 linux pppd[5769]: Connect: ppp0 <--> /dev/pts/1
Jun  3 22:29:17 linux pptpd[5768]: CTRL: Received PPTP Control Message (type: 15)
Jun  3 22:29:17 linux pptpd[5768]: CTRL: Got a SET LINK INFO packet with standard ACCMs
Jun  3 22:29:17 linux pptpd[5768]: CTRL: Received PPTP Control Message (type: 15)
Jun  3 22:29:17 linux pptpd[5768]: CTRL: Ignored a SET LINK INFO packet with real ACCMs!
Jun  3 22:29:17 linux pppd[5769]: LCP terminated by peer (@M-&5M-9^@<M-Mt^@^@^BM-e)
Jun  3 22:29:17 linux pptpd[5768]: CTRL: Received PPTP Control Message (type: 15)
Jun  3 22:29:17 linux pptpd[5768]: CTRL: Got a SET LINK INFO packet with standard ACCMs
Jun  3 22:29:17 linux pptpd[5768]: CTRL: Received PPTP Control Message (type: 12)
Jun  3 22:29:17 linux pptpd[5768]: CTRL: Made a CALL DISCONNECT RPLY packet
Jun  3 22:29:17 linux pptpd[5768]: CTRL: Received CALL CLR request (closing call)
Jun  3 22:29:17 linux pptpd[5768]: CTRL: I wrote 148 bytes to the client.
Jun  3 22:29:17 linux pptpd[5768]: CTRL: Sent packet to client
Jun  3 22:29:17 linux pppd[5769]: Modem hangup
Jun  3 22:29:17 linux pppd[5769]: Connection terminated.
Jun  3 22:29:18 linux pppd[5769]: Exit.
Jun  3 22:29:18 linux pptpd[5768]: GRE: read error: Bad file descriptor
Jun  3 22:29:18 linux pptpd[5768]: CTRL: PTY read or GRE write failed (pty,gre)=(-1,-1)
Jun  3 22:29:18 linux pptpd[5768]: CTRL: Client 145.53.148.27 control connection finished
Jun  3 22:29:18 linux pptpd[5768]: CTRL: Exiting now
Jun  3 22:29:18 linux pptpd[5051]: MGR: Reaped child 5768
Are there any other ways i can try to figure out what's going wrong (please explain in basic terms). Maybe someone can find something is this log?

Last edited by deus1; 06-03-2005 at 03:44 PM.
 
Old 05-23-2006, 04:37 PM   #2
mk6032
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Registered: Oct 2004
Location: Chattanooga, TN
Distribution: rhel, ubuntu, opensuse
Posts: 13

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Quote:
Originally Posted by deus1
I've just tried to install the poptop vnp server on my linux suse 9.1 pro system. I'm using basic config files delivered with the installation. I haven't changed anything (which causes probably the problem). Someone tried to connect to my vpn server, but he got the next message:

Error 741: The local computer does not support the required data encryption type.
Did you look here first?

pptpclient.sourceforge.net/howto-diagnosis.phtml

Try unchecking the "Require data encryption (disconnect if none)" box. It's located on the security tab of the connection properties. If it connects fine, then it's configured to not require MPPE encryption.
 
  


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