Mailing List Archive: Cisco router acting as a PPTP Client with MPPE

Hi there, I've been able to succefully setup a VPN using MS-CHAP, I've been
able to succesfully login using my Windows XP machine.

The necessary configs are as follows:

***********************************************
vpdn enable
!
vpdn-group pptptest
! Default PPTP VPDN group
accept-dialin
protocol pptp
virtual-template 1
!
async-bootp dns-server xxx.xxx.xxx.xxx
!
interface Loopback2
ip address xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx
!
interface Virtual-Template1
ip unnumbered Loopback2
peer default ip address pool vpnpooltest
ppp encrypt mppe auto required
ppp authentication ms-chap
!
ip local pool vpnpooltest xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx
***********************************************

Can I setup my cisco router (2620) over my ADSL circuit using PPTP with
MPPE to connect to the PPTP server? If I can... how do I go about setting it
up?

Thanks in Advance,
Richardg;

Richard,

No, you can't. The reason is that PPTP operates in two modes - voluntary
tunnel mode or compulsory tunnel mode. Cisco supports voluntary tunnel mode
which allows tunnelling directly from a remote access client to a PPTP
gateway. In this model, Cisco routers act as the PPTP gateway (headend). In
compulsory tunnel mode (which Cisco doesn't support), a PPTP tunnel is built
between a PPTP Access Concentrator (PAC, which is a dial access
concentrator/NAS) and a PPTP Network Server (PNS - the gateway). Remote
access clients dial into the PAC and their PPP connections are tunnelled
over PPTP to the PNS.

However, you may like to take a look at client-initiated (voluntary) tunnel
mode on Cisco routers for L2TP - search CCO for 'client-initiated' + 'L2TP'.

Hope that helps,

Mark

>From: "Richard Greasley" <richardg@blue-stream.net>
>To: <cisco-nas@puck.nether.net>
>Subject: [cisco-nas] Cisco router acting as a PPTP Client with MPPE
>Date: Fri, 12 Mar 2004 09:56:08 -0400
>
>Hi there, I've been able to succefully setup a VPN using MS-CHAP, I've been
>able to succesfully login using my Windows XP machine.
>
>The necessary configs are as follows:
>
>***********************************************
>vpdn enable
>!
>vpdn-group pptptest
>! Default PPTP VPDN group
> accept-dialin
> protocol pptp
> virtual-template 1
>!
>async-bootp dns-server xxx.xxx.xxx.xxx
>!
>interface Loopback2
> ip address xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx
>!
>interface Virtual-Template1
> ip unnumbered Loopback2
> peer default ip address pool vpnpooltest
> ppp encrypt mppe auto required
> ppp authentication ms-chap
>!
>ip local pool vpnpooltest xxx.xxx.xxx.xxx xxx.xxx.xxx.xxx
>***********************************************
>
>Can I setup my cisco router (2620) over my ADSL circuit using PPTP with
>MPPE to connect to the PPTP server? If I can... how do I go about setting
>it
>up?
>
>Thanks in Advance,
>Richardg;
>
>_______________________________________________
>cisco-nas mailing list
>cisco-nas@puck.nether.net
>https://puck.nether.net/mailman/listinfo/cisco-nas

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