Autodesk Vault

[#1]

I have Vault set-up on my server at home. The router is configured to pass through on port 80. I am able to log into Vault from within the server, and from other machines on the local network. Outside of the network, IIS is visible- feel free to have a look: http://184.17.89.171/ But when I try to log into Vault from outside the network- I constantly get the "server not found" message. I figured if I can see IIS, and AutodeskDM then it Inventor should be able to log in. Is there a configuration I am overlooking that would allow local network users to log-in but exclude external users, even though external users can successfully see IIS on the machine? Thanks,

[#2]

I'm going to shut down the server for tonight. So the link I posted previously will be dead. I'm still looking for solutions on this however. Thanks,

[#3]

I've still not found a solution.

I suspected it is a firewall issue, however communication with ISS on port 80 is not an issue.