How to fix “No Internet Access” message in Network And Sharing Center on Windows 7 when connected through corporate proxy

I realize the question is about modifying the host file via vbscript.

Would it be more effective to create a new internal DNS entry for the hostname you're trying to resolve? If you truly want EVERY user/machine on the network to see this change, perhaps this would be easier?

• Adding DNS Services to your Windows 2003 Server at Petri.
• The Microsoft walkthrough on Installing and Configuring DNS

This is a grossly-simplified explanation, but what you want to do cannot be achieved without changing ports on the outside because the firewall that's in front of your 3 servers doesn't "care" what the hostname is; it only cares about IP addresses and ports and as such has no way of knowing what server it is that you want to connect to.

Now if you can burn a couple of extra public IP addresses, you can do 1:1 NAT (sometimes called "DMZ mode") so that server1, server2, server3 effectively have their own public IP addresses and then you can create server1.example.com to resolve to server1's NAT'ed public IP address and so on.

There might be an SSH daemon or reverse proxy out there that "understands" the SSH protocol enough to do this by hostname, but my guess is not (and perhaps someone well-versed in the SSH v2 protocol can elaborate).