I was setting up a VPN server at home last night and I thought I got it working (I could connect to it with the VPN client while I was on the same LAN segment). When I brought the same laptop to work this morning and tried to connect to it again I was unable to. I was thinking that possibly I have something not set correctly in my firewall, but when I did a default forward (all ports by default get forwarded to my VPN server) I was still unable to connect.

Here is what my message log looks like:

Mar 19 13:36:39 SUSE pptpd[5070]: MGR: Launching /usr/sbin/pptpctrl to handle client
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: local address = 192.168.0.2
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: remote address = 192.168.1.2
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: Client 32.97.110.142 control connection started
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: Received PPTP Control Message (type: 1)
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: Made a START CTRL CONN RPLY packet
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: I wrote 156 bytes to the client.
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: Sent packet to client
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: Received PPTP Control Message (type: 7)
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: 0 min_bps, 1525 max_bps, 32 window size
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: Made a OUT CALL RPLY packet
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: Starting call (launching pppd, opening GRE)
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: pty_fd = 4
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: tty_fd = 5
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: I wrote 32 bytes to the client.
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: Sent packet to client
Mar 19 13:36:39 SUSE pptpd[5071]: CTRL (PPPD Launcher): Connection speed = 115200
Mar 19 13:36:39 SUSE pptpd[5071]: CTRL (PPPD Launcher): local address = 192.168.0.2
Mar 19 13:36:39 SUSE pptpd[5071]: CTRL (PPPD Launcher): remote address = 192.168.1.2
Mar 19 13:36:39 SUSE pppd[5071]: pppd 2.4.1 started by root, uid 0
Mar 19 13:36:39 SUSE pppd[5071]: Using interface ppp0
Mar 19 13:36:39 SUSE pppd[5071]: Connect: ppp0 <--> /dev/pts/0
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: Received PPTP Control Message (type: 15)
Mar 19 13:36:39 SUSE pptpd[5070]: CTRL: Got a SET LINK INFO packet with standard ACCMs
Mar 19 13:37:16 SUSE pptpd[5070]: CTRL: Received PPTP Control Message (type: 12)
Mar 19 13:37:16 SUSE pptpd[5070]: CTRL: Made a CALL DISCONNECT RPLY packet
Mar 19 13:37:16 SUSE pptpd[5070]: CTRL: Received CALL CLR request (closing call)
Mar 19 13:37:16 SUSE pptpd[5070]: CTRL: I wrote 148 bytes to the client.
Mar 19 13:37:16 SUSE pptpd[5070]: CTRL: Sent packet to client
Mar 19 13:37:16 SUSE pppd[5071]: Modem hangup
Mar 19 13:37:16 SUSE pppd[5071]: Connection terminated.
Mar 19 13:37:16 SUSE pppd[5071]: Exit.
Mar 19 13:37:16 SUSE pptpd[5070]: GRE: read error: Bad file descriptor
Mar 19 13:37:16 SUSE pptpd[5070]: CTRL: PTY read or GRE write failed (pty,gre)=(-1,-1)
Mar 19 13:37:16 SUSE pptpd[5070]: CTRL: Client 32.97.110.142 control connection finished
Mar 19 13:37:16 SUSE pptpd[5070]: CTRL: Exiting now
Mar 19 13:37:16 SUSE pptpd[2680]: MGR: Reaped child 5070


Does this look correct to anyone?
Did I do something wrong?

I think I'm almost there, but I need a little push to help me with the last couple steps.

Thanks

Hi:
We are getting the same problem with the pptp. Then we thought may be it was the SuSE 9 problem then we got SuSE 9.1 installed but still we are getting the same problem. I am really interested to know if you were able to fix the problem. If you could tell me it would be really great.
regards
Chethan Channappa

My problem is a bit different. I have this error message :

Feb 7 20:34:09 Debian pptpd[20888]: MGR: Launching /usr/sbin/pptpctrl to handle client
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: local address = 192.168.1.100
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: remote address = 192.168.1.101
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: pppd options file = /etc/ppp/pptpd-options
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: Client 81.105.140.150 control connection started
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: Received PPTP Control Message (type: 1)
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: Made a START CTRL CONN RPLY packet
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: I wrote 156 bytes to the client.
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: Sent packet to client
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: Received PPTP Control Message (type: 7)
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: Set parameters to 100000000 maxbps, 64 window size
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: Made a OUT CALL RPLY packet
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: Starting call (launching pppd, opening GRE)
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: pty_fd = 6
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: tty_fd = 7
Feb 7 20:34:09 Debian pptpd[20889]: CTRL (PPPD Launcher): program binary = /usr/sbin/pppd
Feb 7 20:34:09 Debian pptpd[20889]: CTRL (PPPD Launcher): local address = 192.168.4.100
Feb 7 20:34:09 Debian pptpd[20889]: CTRL (PPPD Launcher): remote address = 192.168.4.101
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: I wrote 32 bytes to the client.
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: Sent packet to client
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: Received PPTP Control Message (type: 15)
Feb 7 20:34:09 Debian pptpd[20888]: CTRL: Got a SET LINK INFO packet with standard ACCMs
Feb 7 20:34:39 Debian pptpd[20888]: GRE: read(fd=6,buffer=80507e0,len=8196) from PTY failed: status = -1 error = Input/output error, usually caused by unexpected termination of pppd, check option syntax and pppd logs
Feb 7 20:34:39 Debian pptpd[20888]: CTRL: PTY read or GRE write failed (pty,gre)=(6,7)
Feb 7 20:34:39 Debian pptpd[20888]: CTRL: Reaping child PPP[20889]
Feb 7 20:34:39 Debian pptpd[20888]: CTRL: Client 81.105.140.150 control connection finished
Feb 7 20:34:39 Debian pptpd[20888]: CTRL: Exiting now
Feb 7 20:34:39 Debian pptpd[20784]: MGR: Reaped child 20888

It works on the LAN, doesn't work from Internet. My iptables rules :

iptables -A INPUT -i lo -j ACCEPT
iptables -A OUTPUT -o lo -j ACCEPT


iptables -A INPUT -p tcp --dport 1723 -i eth1 -j ACCEPT
iptables -A OUTPUT -p tcp --sport 1723 -o eth1 -j ACCEPT

iptables -A INPUT -p 47 -j ACCEPT

iptables -A INPUT -p GRE -j ACCEPT
iptables -A OUTPUT -p GRE -j ACCEPT
iptables -A FORWARD -p GRE -j ACCEPT

iptables -F FORWARD
iptables -A FORWARD -j ACCEPT

iptables -A POSTROUTING -t nat -o eth1 -j MASQUERADE

echo 1 > /proc/sys/net/ipv4/ip_forward

Please help !