VPN ipsec tunnel from router to single windows server computer
(gateway-to-host)  view story  http://serverfault.com – Firstly,
is this possible? I haven't seen any posts that talk about this.
The situation: 2 different ISP's. One has several servers and a
firewall running. The other is limited to only one virtual
server with one network card running windows server 2008r2. I
need to set up a site-to-site style VPN using IPsec between the
firewall of one ISP and the windows host on the other (gateway-
to-host). This host has to run a SQL-Server that I can access
from the other ISP's servers through the VPN tunnel. It seems
looking at the RFC for IPsec that this should be possible using
the features of Window (HowTos)