[pptp-server] GRE failures

[Kenneth E. Lussier]

I never did find what the problem was, so I eliminated it all together. I got
virgin source for 2.2.15, the downgraded to ppp-2.3.8, applied the patch, and
voila, it worked like a charm! I remember seeing something on the list about
there being a problem with the mppe patch for 2.3.10, but I can't find that
post again... Oh well, such is life. It works now, and functionality is all I
need. 
Kenny

-- 
Kenny Lussier
Systems Administrator
Mission Critical Linux
******************************
If at first you don't succeed, 
destroy all evidence that you 
tried
******************************

> Jerry Kosek wrote:
> 
> I get the same error messages trying to connect from WIN9X clients. My setup is almost identical to yours as far as all of the
> 
> configuration files are concerned. I have poptop installed on a Red Hat 6.1 server.
> 
> 
> 
> 
> 
> All,
>         I set up poptop on a server, but I can't connect to it using the Linux pptp
> client ( I haven't had a chance to try a WinXX client yet). There is no
> firewall between machines, and no ipchains rules on the poptop server.
> TIA,
> Kenny
> 
> Here is all of the info I can think of:
> The Errors:
> /var/log/pptp.log:
> Jun  1 16:11:04 vpn pptpd[647]: MGR: Launching /usr/local/sbin/pptpctrl to
> handle client
> Jun  1 16:11:04 vpn pptpd[647]: CTRL: local address = 192.168.1.63
> Jun  1 16:11:04 vpn pptpd[647]: CTRL: remote address = 192.168.1.2
> Jun  1 16:11:04 vpn pptpd[647]: CTRL: pppd speed = 115200
> Jun  1 16:11:04 vpn pptpd[647]: CTRL: Client 192.168.1.195 control connection
> started
> Jun  1 16:11:04 vpn pptpd[647]: CTRL: Received PPTP Control Message (type: 1)
> Jun  1 16:11:04 vpn pptpd[647]: CTRL: Made a START CTRL CONN RPLY packet
> Jun  1 16:11:04 vpn pptpd[647]: CTRL: I wrote 156 bytes to the client.
> Jun  1 16:11:04 vpn pptpd[647]: CTRL: Sent packet to client
> Jun  1 16:11:05 vpn pptpd[647]: CTRL: Received PPTP Control Message (type: 7)
> Jun  1 16:11:05 vpn pptpd[647]: CTRL: Set parameters to 152 maxbps, 3 window
> size
> Jun  1 16:11:05 vpn pptpd[647]: CTRL: Made a OUT CALL RPLY packet
> Jun  1 16:11:05 vpn pptpd[647]: CTRL: Starting call (launching pppd, opening
> GRE)
> Jun  1 16:11:05 vpn pptpd[647]: CTRL: pty_fd = 4
> Jun  1 16:11:05 vpn pptpd[647]: CTRL: tty_fd = 5
> Jun  1 16:11:05 vpn pptpd[647]: CTRL: I wrote 32 bytes to the client.
> Jun  1 16:11:05 vpn pptpd[648]: CTRL (PPPD Launcher): Connection speed =
> 115200
> Jun  1 16:11:05 vpn pptpd[647]: CTRL: Sent packet to client
> Jun  1 16:11:05 vpn pptpd[648]: CTRL (PPPD Launcher): local address =
> 192.168.1.63
> Jun  1 16:11:05 vpn pptpd[648]: CTRL (PPPD Launcher): remote address =
> 192.168.1.2
> Jun  1 16:11:05 vpn pptpd[647]: GRE: read(fd=4,buffer=804d7c0,len=8196) from
> PTY failed: status = -1 error = Input/output error
> Jun  1 16:11:05 vpn pptpd[647]: CTRL: PTY read or GRE write failed
> (pty,gre)=(4,5)
> Jun  1 16:11:05 vpn pptpd[647]: CTRL: Client 192.168.1.195 control connection
> finished
> Jun  1 16:11:05 vpn pptpd[647]: CTRL: Exiting now
> Jun  1 16:11:05 vpn pptpd[494]: MGR: Reaped child 647
> 
> /var/log/messages:
> Jun  1 16:11:04 vpn pptpd[647]: CTRL: Client 192.168.1.195 control connection
> started
> Jun  1 16:11:05 vpn pptpd[647]: CTRL: Starting call (launching pppd, opening
> GRE)
> Jun  1 16:11:05 vpn pptpd[647]: GRE: read(fd=4,buffer=804d7c0,len=8196) from
> PTY failed: status = -1 error = Input/output error
> Jun  1 16:11:05 vpn pptpd[647]: CTRL: PTY read or GRE write failed
> (pty,gre)=(4,5)
> Jun  1 16:11:05 vpn pptpd[647]: CTRL: Client 192.168.1.195 control connection
> finished
> Jun  1 16:11:07 vpn kernel: ip_demasq_gre(): 192.168.1.195 -> 192.168.1.67
> CID=0 no masq table, discarding
> Jun  1 16:11:32 vpn last message repeated 9 times
> 
> Configs:
> Server Side:
> 
> /etc/ppp/options:
> lock
> debug
> auth
> proxyarp
> +chap
> +chapms
> +chapms-v2
> no-mppe-40
> mppe-128
> mppe-stateless
> 
> /etc/pptp.conf
> speed 115200
> debug
> localip 192.168.1.63
> remote 192.168.1.66-69
> listen 192.168.1.67
> 
> Client Side:
> /etc/ppp/options:
> lock
> debug
> noauth
> +chap
> +chapms
> +chapms-v2
> mppe-40
> mppe-128
> mppe-stateless
> 
> --
> Kenny Lussier
> Systems Administrator
> Mission Critical Linux
> ******************************
> If at first you don't succeed,
> destroy all evidence that you
> tried
> ******************************