[pptp-server] Assigned IP addresses, and dropping the connection

[Steve Sarette]

Ron Cresswell wrote:

<snippage (because I don't know the answer)>
> 
> Also, is there a way to cleanly drop this connection? 

become root
ifconfig ppp0 down
kill -HUP `cat /var/run/ppp0.pid`  (not sure of the exact file name, but 
it's something like that)
rm /var/run/pptp/<the ip that you connected to>

I think you also have to kill an additional pptp process.  The FAQ says 
that killing the ppp process should kill off the pptp processes too but 
I always see one hanging around.  Just do:

ps -ef | grep pptp

and kill the process that you see.

Sorry that I can't be more explicit but I'm on a machine that doesn't 
have all this stuff configured so I'm writing this from memory.  Also, 
probably there's a cleaner way to go about dropping the connection but I 
haven't found it yet.

Good luck.

- Steve

The only way I can
> clean the thing out to start a new connection is to reboot! 
>   It seems that the server times out, and drops the PPP interface, but
> that interface is still hanging around on the client, even though the
> log file says:
> 
> 1 14:15:50 jabba pppd[709]: Connect: ppp0 <--> /dev/ttya0
> Nov  1 14:15:54 jabba pppd[709]: Remote message: Welcome to ghost.
> Nov  1 14:15:54 jabba kernel: PPP BSD Compression module registered 
> Nov  1 14:15:54 jabba kernel: PPP Deflate Compression module registered 
> Nov  1 14:15:55 jabba pppd[709]: Deflate (15) compression enabled
> Nov  1 14:15:57 jabba pppd[709]: Cannot determine ethernet address for
> proxy ARP
> Nov  1 14:15:57 jabba pppd[709]: local  IP address 203.7.194.34
> Nov  1 14:15:57 jabba pppd[709]: remote IP address 203.7.194.159
> Nov  1 14:21:20 jabba (unknown)[706]:
> log[pptp_dispatch_ctrl_packet:pptp_ctrl.c:671]: Call closed (NTFY) (call
> id 0)
> Nov  1 14:27:57 jabba inetd[503]: pid 753: exit status 1
> 
> The log file at the server end says this:
> 
> Nov  1 14:15:10 ghost pppd[709]: Connect: ppp0 <--> /dev/pts/0
> Nov  1 14:15:12 ghost pptpd[708]: GRE: Discarding duplicate packet
> Nov  1 14:15:14 ghost kernel: PPP BSD Compression module registered
> Nov  1 14:15:14 ghost kernel: PPP Deflate Compression module registered
> Nov  1 14:15:14 ghost pppd[709]: CHAP peer authentication succeeded for
> ron
> Nov  1 14:15:14 ghost pppd[709]: Deflate (15) compression enabled
> Nov  1 14:15:16 ghost pppd[709]: Cannot determine ethernet address for
> proxy ARP
> Nov  1 14:15:16 ghost pppd[709]: local  IP address 203.7.194.128
> Nov  1 14:15:16 ghost pppd[709]: remote IP address 203.7.194.1
> Nov  1 14:15:24 ghost PAM_pwdb[748]: (login) session opened for user ron
> by (uid=0)
> Nov  1 14:15:34 ghost PAM_pwdb[769]: (su) session opened for user root
> by ron(uid=500)
> Nov  1 14:20:30 ghost pptpd[708]: CTRL: Session timed out, ending call
> Nov  1 14:20:30 ghost pptpd[708]: CTRL: Client 203.7.194.33 control
> connection finished
> Nov  1 14:20:30 ghost pppd[709]: Modem hangup
> Nov  1 14:20:30 ghost pppd[709]: Connection terminated.
> Nov  1 14:20:30 ghost pppd[709]: Connect time 5.4 minutes.
> Nov  1 14:20:30 ghost pppd[709]: Sent 562 bytes, received 669 bytes.
> Nov  1 14:20:30 ghost pppd[709]: Exit.
> Nov  1 14:30:00 ghost kernel: PPP: ppp line discipline successfully
> unregistered