Topic: PPTP...Error 619

[Devlyn Davis]

Greetings All,

I am having problems getting PPTP working on my setup.  I have searched through the forum and read the manual and a few howto's, but so far no luck.  Below is my configuration and a log excerpt.  Any help would be appreciated.

I have a router (Coyote Linux.)  Ports 1723 and 47 are being forwarded to my SME box.  
SME ver 5.1.2 sits behind the router.
PPTP enabled, 5 clients
I am trying to connect with Windows 2000 Pro SP2.  I created the VPN connection and am using pretty much the default settings.

Here is an excertp from /var/log/messages  This was my latest connection attempt.
==========================================================
Mar 18 15:13:19 beesmain pptpd[22826]: MGR: Launching /usr/sbin/pptpctrl to handle client
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: local address = 192.168.1.154
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: remote address = 192.168.1.247
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: pppd speed = 460800
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: pppd options file = /etc/ppp/options.pptpd
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: Client 65.207.169.236 control connection started
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: Received PPTP Control Message (type: 1)
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: Made a START CTRL CONN RPLY packet
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: I wrote 156 bytes to the client.
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: Sent packet to client
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: Received PPTP Control Message (type: 7)
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: 0 min_bps, 1525 max_bps, 32 window size
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: Made a OUT CALL RPLY packet
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: Starting call (launching pppd, opening GRE)
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: pty_fd = 5
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: tty_fd = 6
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: I wrote 32 bytes to the client.
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: Sent packet to client
Mar 18 15:13:19 beesmain pptpd[22827]: CTRL (PPPD Launcher): Connection speed = 460800
Mar 18 15:13:19 beesmain pptpd[22827]: CTRL (PPPD Launcher): local address = 192.168.1.154
Mar 18 15:13:19 beesmain pptpd[22827]: CTRL (PPPD Launcher): remote address = 192.168.1.247
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: Received PPTP Control Message (type: 15)
Mar 18 15:13:19 beesmain pptpd[22826]: CTRL: Got a SET LINK INFO packet with standard ACCMs
Mar 18 15:13:19 beesmain modprobe: modprobe: Can't locate module char-major-108
Mar 18 15:13:19 beesmain pppd[22827]: pppd 2.4.0 started by root, uid 0
Mar 18 15:13:19 beesmain pppd[22827]: Using interface ppp0
Mar 18 15:13:19 beesmain pppd[22827]: Connect: ppp0 <--> /dev/pts/1
Mar 18 15:13:49 beesmain pppd[22827]: LCP: timeout sending Config-Requests
Mar 18 15:13:49 beesmain pppd[22827]: Connection terminated.
Mar 18 15:13:49 beesmain pppd[22827]: Exit.
Mar 18 15:13:49 beesmain pptpd[22826]: Error reading from pppd: Input/output error
Mar 18 15:13:49 beesmain pptpd[22826]: CTRL: GRE read or PTY write failed (gre,pty)=(6,5)
Mar 18 15:13:49 beesmain pptpd[22826]: CTRL: Client 65.207.169.236 control connection finished
Mar 18 15:13:49 beesmain pptpd[22826]: CTRL: Exiting now
Mar 18 15:13:49 beesmain pptpd[3770]: MGR: Reaped child 22826
Mar 18 15:14:13 beesmain sshd(pam_unix)[21811]: session closed for user root
Mar 18 15:14:55 beesmain sshd[22850]: Could not reverse map address 65.207.169.236.
Mar 18 15:14:58 beesmain sshd[22850]: Accepted password for ROOT from 65.207.169.236 port 37062
Mar 18 15:14:58 beesmain sshd(pam_unix)[22850]: session opened for user root by (uid=0)
===========================================================

[Devlyn Davis]

I think I figured it out and will test it tomorrow.

I needed to add a module called ipfwd to my Coyote Linux router and configure GRE 47 forwarding.  I made the mistake, like some others, of confusing the gre protocol 47 with forwarding tcp/udp port 47.  I'll report in if I'm able to get it to work.

-Dev

[Shing Ho]

Hi Devlyn

Did you resolve your problem?  I have the exact same problem.

Thanks
Shing...

[Devlyn Davis]

No, not yet, but I have a fairly good idea of what the problem is.

The firewall/router I am using is an LRP based distro called Coyote Linux.  Basically this is a Linux system that fits on a single floppy whose sole purpose is to act as a firewall/router.  In addition I have added Seattle Seawall to Coyote to act as a more flexible and more secure firewall.

The problem, it seems, is that there are overlapping requirements to get PPTP to work through Coyote and through Seawall and I'm not sure where I'm causing them to step on each other's toes.

I'll probably end up redoing the router from scratch, with PPTP in mind.  In the meantime, I will probably end up replacing my current router with the e-smith box, at least temporarily, if for no other reason than to convince myself that the PPTP stuff does really work.

-Dev

[Sorg]

I have the same problem and the gateway is SME itself, so ther is no routing problem... I'm still looking for a solution!

[Shing Ho]

I still have the problem.  Have you got a solution?

Thanks
Shing

[Jáder Marasca]

Hello

I also have the same problem in SOME of my SME servers...
I noted that is allways with a firewall in front of SME (I use SME 5.5!)... so it´s something about firewall... I´m not sure about what YET!

I have done GRE forward to SME server (I use Smoothwall!) and this is working for some SME server but not for others!

I have one Smoothwall 1.0 (kernel 2.2.19) with cable modem and SME 5.5 = works
I have one Smoothwall 1.0 (kernel 2.2.19) with ADSL (USR 8550 router) and SME 5.5 = do not work!

Maybe something in router?