[pptp-server] weird encryption problem

[Shannon Pearce]

Hi

When I connect to a linux machine (2.2.17) running pptpd, without
encryption, it connects fine, and allows me access to the network. As soon
as I enable encryption, it connects fine, however wont allow me to ping
anything. here is the logs from syslog:

Oct 25 06:31:01 rm4 pptpd[6235]: CTRL: Client 12.36.108.95 control
connection started
Oct 25 06:31:01 rm4 pptpd[6235]: CTRL: Starting call (launching pppd,
opening GRE)
Oct 25 06:31:02 rm4 kernel: registered device ppp0
Oct 25 06:31:02 rm4 pppd[6236]: pppd 2.3.11 started by root, uid 0
Oct 25 06:31:02 rm4 pppd[6236]: Using interface ppp0
Oct 25 06:31:02 rm4 pppd[6236]: Connect: ppp0 <--> /dev/pts/1
Oct 25 06:31:02 rm4 pptpd[6235]: GRE: Discarding duplicate packet
Oct 25 06:31:04 rm4 pptpd[6235]: CTRL: Ignored a SET LINK INFO packet with
real ACCMs!
Oct 25 06:31:04 rm4 pppd[6236]: MSCHAP-v2 peer authentication succeeded for
ana
Oct 25 06:31:05 rm4 pppd[6236]: Cannot determine ethernet address for proxy
ARP
Oct 25 06:31:05 rm4 pppd[6236]: local  IP address 10.0.0.1
Oct 25 06:31:05 rm4 pppd[6236]: remote IP address 10.0.0.2
Oct 25 06:31:05 rm4 pppd[6236]: MPPE 40 bit, non-stateless compression
enabled
Oct 25 06:32:14 rm4 pppd[6236]: Protocol-Reject for unsupported protocol
0xf643

<then rip it down after a few minutes>

Oct 25 06:35:37 rm4 pptpd[6235]: CTRL: Ignored a SET LINK INFO packet with
real ACCMs!
Oct 25 06:35:37 rm4 pppd[6236]: LCP terminated by peer
(*_>M-z^@<M-Mt^@^@^@^@)
Oct 25 06:35:37 rm4 pptpd[6235]: CTRL: Error with select(), quitting
Oct 25 06:35:37 rm4 pptpd[6235]: CTRL: Client 12.36.108.95 control
connection finished
Oct 25 06:35:37 rm4 pppd[6236]: Modem hangup
Oct 25 06:35:37 rm4 pppd[6236]: Connection terminated.
Oct 25 06:35:37 rm4 pppd[6236]: Connect time 4.6 minutes.
Oct 25 06:35:37 rm4 pppd[6236]: Sent 7300 bytes, received 6473 bytes.
Oct 25 06:35:37 rm4 pppd[6236]: Exit.


it appears to connect fine, but will not ping anything, any ideas or
suggestions greatly appreciated.


regards,

Shannon Pearce