Re: Error 721 when trying to VPN
- From: "Ray" <noreply@xxxxxxxxxxx>
- Date: Tue, 22 Jul 2008 20:38:20 -0400
It's just like it says. If everyone else is working, either their ISP is
blocking GRE or their home router is not configured to allow PPTP to pass
through.
Ray
"melu" <melu@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:745E449F-CA9E-404E-8BEE-A2FDA0C1A43D@xxxxxxxxxxxxxxxx
Hi,
We are running ISA Server 2004 Pack 3 on windows 2003 sp2.
One of the users when they try to VPN in get the following error:
Event ID: 20209 [logged on the ISA2004 server]
Source: RasMan
"A connection between the VPN server and the VPN client w.x.y.z has been
established, but the VPN connection cannot be completed. The most common
cause for this is that a firewall or router between the VPN server and the
VPN client is not configured to allow Generic Routing Encapsulation (GRE)
packets (protocol 47). Verify that the firewalls and routers between your
VPN
server and the Internet allow GRE packets. Make sure the firewalls and
routers on the user's network are also configured to allow GRE packets. If
the problem persists, have the user contact the Internet service provider
(ISP) to determine whether the ISP might be blocking GRE packets."
The user gets error message 721 at home.
Can anyone suggest a resolution?
Thankx
.
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