[pptp-server] Cisco 800 series issues?

[Chris Kalos]

We're running 12.0.7T of IOS, but were running 12.0.4 yesterday.  

Another problem that I'm seeing now is that the dialup ISDN service that we're 
accessing only provides the single IP for the router, thus forcing us to use 
NAT for any system behind this router.  Since I'm trying to run a client-server 
VPN, and not router-to-router, could this cause any problems?  The VPN server 
(which, again, works fine in most other cases) is also on a NAT network back 
home, having gre and port 1723 forwarded to it.

Thanks again,
CK

Quoting "Stan A. Rogge" <stan at rogge.net>:

> If I remember correctly the early software releases for the 800 series
> had software bugs preventing a PPTP tunnel from being possible where the
> client was behind it and the server somewhere else over the Internet.  A
> software fix was made available.  This was last summer 2000.  How old is
> your router's IOS?  
> 
> ----- Original Message ----- 
> From: "Chris Kalos" <ckalos at gothambroadband.com>
> To: <pptp-server at lists.schulte.org>
> Sent: Wednesday, August 22, 2001 9:35 AM
> Subject: [pptp-server] Cisco 800 series issues?
> 
> 
> > I've got a Poptop VPN that normally works perfectly.  Now I'm trying
> to get it 
> > working over an ISDN link on a Cisco 800 with the IP (or IP Firewall)
> feature 
> > set.  While the router can support GRE, this one does not, and as a
> result, I'm 
> > consistently getting this error:
> > 
> > Aug 22 10:22:56 thing pppd[22632]: LCP: timeout sending
> Config-Requests
> > Aug 22 10:22:56 thing pppd[22632]: Connection terminated.
> > 
> > I know that this means that a GRE tunnel can't be created.  What I
> don't know 
> > is if there is any way to allow the protocol to get past the router. 
> I don't 
> > need to do router to router VPN, I just want to make a Win2K system
> connect to 
> > the VPN server, as one would normally do.
> > 
> > If this isn't an option, then I may have to move on to upgrading the
> 800 series 
> > router and setting it up as a VPN server.  If I have to do this, is
> there any 
> > sensible way to make the 800 series talk to Poptop, or do I have to
> move on to 
> > an IPSec based VPN solution?
> > 
> > 
> > Thank you,
> > Christopher Kalos
> > Systems Administrator
> > Gotham Broadband
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