Re: PPTP Misery
- From: Simon UK <SimonUK@xxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Mon, 11 Dec 2006 05:53:02 -0800
Thanks for coming back so quickly. I think I'm doing a bad job of explaining
this but to make it absolutely clear:
Have carried out the following from three separate remote locations, two via
router and one via DSL modem. Each time using at least two separate PCs that
have never been near the domain & two PCs that were set up on the domain via
SBS wizards. The latter have been taken off and then put back on, then off
again for the tests
a) PCs that were originally on domain will not PPTP VPN despite no Firewall
and advised registry fixes. All of the domain notebooks had previously VPN-ed
perfectly well until some undetermined point in time about a month ago
b) Any other PC will still PPTP VPN without any issue at all.
All routers are working fine and have necessary GRE protocol and ports.
Internal subnets happen to be the same and changing it doesn't affect either
point 1 or 2 above.
Surely it MUST be a local machine registry issue left over from the domain
profile/policy? Any other PC perfectly fine. Totally agree it appears to be
GRE though. It's doing my head in..............
To answer your specific points:
1. Current location router/DHCP set-up provides 192.168.1.65 with
255.255.255.0 and server end has two NIC scenario with router as follows -
Server LAN 192.168.16.2 (255.255.255.0) Server WAN 10.0.0.2 (255.0.0.0)
Router LAN 10.0.0.1 (Gateway) with external IP on other side.
2. Yes.
3. No (but non-domain guest machine can).
4. Don't need to (see above).
5. Don't need to (see above).
I want to return to default PPTP without having to do anything drastic to
the machines. Hence my simplified question. Thanks again in advance for any
help that may be forthcoming.
"Leythos" wrote:
In article <483FA895-9FDE-44DD-973E-A4AABFF52B64@xxxxxxxxxxxxx>,.
SimonUK@xxxxxxxxxxxxxxxxxxxxxxxxx says...
Is there a way to reload the default PPTP registry profile in a Windows XP
Pro machine?
I appreciate that policy might change things back but I want to force one of
the domain PCs (the one I'm using is now off the domain and in at Admin M/C
level) to connect - just to prove I'm heading in right direction. Tinkering
with various PPTP registry settings has not solved the problem. Any ideas?
All suggestions welcome if I'm way off track.
Remove the workstation from the domain, make it a member of a workgroup,
reboot it again, then join it back to the domain.
Also, 721 is a clear indication of a GRE problem.
There can be several issues with 721 that you need to look into if
you've not already looked into them:
1) Is the remote computer on a different subnet than the LAN/WAN of the
SBS box?
2) Is the remote computer setup for PPTP Pass-Through on the router that
it's connected to (at the remote end)?
3) Can the problem computer PPTP when connected to the SBS LAN?
4) Have you reset the remote computers router to factory defaults and
tried it again?
5) Have you checked the vendors websites (support) for GRE fixes/hacks
to remove GRE errors?
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