[Openswan Users] PPP LCP Issues

Jacco de Leeuw jacco2 at dds.nl
Tue Oct 19 20:39:25 CEST 2004

Daniel Bartlett wrote:

> I have managed to get the IPSec/L2TP parts of the VPN working, but I'm 
> now having issues with the PPP connection.
> This is a Windows XP Pro SP2 connecting to a Fedora Core 2 Server 
> running OpenSwan 2.2.0 using x509 certificates.
> The Windows IPSec/VPN client connects, negotiates keys then falls over 
> on the PPP setup with the error:
> "Error 732: Your computer and the remote computer could not agree on PPP 
> control protocols."
> I have setup the connection with LCP and compression turned on. Using EAP.

EAP? Why is that? What happens if you try PAP/CHAP?

There are some other settings that you could try, e.g. disable (MPPE)
encryption, disable (the patent encumbered MPPC) compression, disable LCP

> Oct 19 16:22:07 fedora-1 pppd[6566]: LCP: timeout sending 
> Config-Requests   (This comes a while after, as you can see)

Do you actually see (encapsulated) PPP packets being sent to the client with
tcpdump? You could also enable Windows PPP debugging (see:

Jacco de Leeuw                         mailto:jacco2 at dds.nl
Zaandam, The Netherlands           http://www.jacco2.dds.nl

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