Question : Remote connection from the internet to a nat computer in a SBS 2008 R2 network

Win7 machine connected to a SBS 2008 R2 network using DHCP and a 192.x address.
Cisco 2600 series router with private addresses to connect to the Internet

(a) what command do i use on the router to map public ip address to the win7 nat address?
(b) what do I do on either the win7 machine to allow remote connectivity (or is this done via SBS 2008 R2 ?)

Answer : Remote connection from the internet to a nat computer in a SBS 2008 R2 network

I am not for sure how familiar you are with SBS08, but it has a feature called RWW (Remote Web Workplace) if you just open up the ports on your cisco device it already has a built in vpn within RWW. You access it on the WAN side by https://remote.yourdomain.com Once at this site you login and it will allow you to access Sharepoint (Intranet), RDP to the clients on your network and access OWA(Webmail). You can control who can access what machine externally via the SBS console. The following ports need opened:

Port 25 SMTP (Outgoing Exchange e-mail)
Port 80 HTTP (NOT needed normally)
Port 443 HTTPS (RWW, OWA, remote desktop or Terminal Server sessions)
Port 987 External secure Companyweb access
Port 1723

Port 80 only needs opened if your not using SSL. I do reccommend using SSL.