Wehave sbs2003 setup with 2 nic's. We are able to connect via VPN from the US
and from the UK offices, but when the CEO goes home to mexico and tries to
connect via the VPN using her Satelite ISP she receives a error 721 and on
the server event log it shows and event with id 20209. Our CEO can connect
from the UK and US fine. The Satelite ISP is telling me that they are not
blocking any protocols. Can anyone provide me with a little help on this, i
think it is the Satelite ISP, any info would be greatly appreciated.
Event ID 20209
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."