PPTP uses GRE for the actual VPN connection (it makes and initial TCP
connection for the initial setup, but uses GRE afterwards). Since GRE is
a layer 3 protocol distinct from IP, maybe you will need to use bridging
to get the GRE through.
> -----Original Message-----
> From: openvpn-users-bounces@xxxxxxxxxxxxxxxxxxxxx
> [mailto:openvpn-users-bounces@xxxxxxxxxxxxxxxxxxxxx] On
> Behalf Of Mike Meyer
> Sent: Wednesday, June 14, 2006 9:02 AM
> To: openvpn-users@xxxxxxxxxxxxxxxxxxxxx
> Subject: [Openvpn-users] PPTP through openvpn?
> I'm in a situation where I need to run a VPN to reach a point
> where I can get packets to the host I actually want to
> connect to with a VPN. OpenVPN is perfect for the "outer"
> VPN. However, for a variety of reasons, I'd like to run PPTP
> for the inner VPN. This means I need to pass PPTP through OpenVPN.
> Anyone have any pointers on such a setup? Anyone know for
> sure that ti will - or won't - work?
> Mike Meyer <mwm@xxxxxxxxx>
> Independent Network/Unix/Perforce consultant, email for more
> Openvpn-users mailing list
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