[pptp-server] LCP: time out

Neale Banks neale at lowendale.com.au
Tue Mar 19 20:21:34 CST 2002

On Wed, 20 Mar 2002, [Windows-1252] Örjan Johansson wrote:

> Now when I try and connect the client semms to connect. It stops and
> waits at the 'verifying username and password'. When I look at the log
> it says :
> Mar 20 01:44:37 howdy pptpd[8063]: CTRL: Starting call (launching pppd,
> opening GRE)
> Mar 20 01:44:37 howdy pppd[8064]: pppd 2.4.1 started by root, uid 0
> Mar 20 01:44:37 howdy pppd[8064]: Using interface ppp0
> Mar 20 01:44:37 howdy pppd[8064]: Connect: ppp0 <--> /dev/pts/2
> Mar 20 01:45:08 howdy pppd[8064]: LCP: timeout sending Config-Requests 
> Mar 20 01:45:08 howdy pppd[8064]: Connection terminated.
> Mar 20 01:45:08 howdy pppd[8064]: Exit.

That "smells like" GRE being blocked somewhere.

> The negotiation/lcp should go over tcp/1723 right? And the data over
> protocol 47? I've made sure my shorewall lets all this through.
> Any chance I could see some sample options files? I'm running RH7.2,
> patched 2.4.9-31 kernel, pppd 2.4.1 with the three patches, and poptop
> 1.0.1.

Not quite.  Initial control info ovet tcp/1723 but all ppp (including LCP)
over GRE (i.e. IP protocol 47).

> My options file looks like this (at the moment, it changes every
> five seconds testing...:-):
> debug

Hmm... you've got debug turned on, but we aren't seeing pppd's debug
messages???  Is there more info in debug.log?

Usually you can work out which path has GRE blocked from the LCP debug


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