Why can't I connect to my VNC server from outside my network?

Why can't I connect to my VNC server from outside my network? I have a computer running TightVNC server. It is on my home network. The computer it is installed on has a locally static ip address 192.168.1.100. I am able to connect to this vnc server from my home network fine, but unable to connect from outside my network (using the IP address that I see at www.whatismyip.com).
Asked by: Guest \| Views: 345

Total answers/comments: 3

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Guest [Entry]

"I would double check that you have forwarded the port as that is all you should need to do.

If there is a problem, try changing the default port in case your ISP is blocking it.

Lastly, you may want to double check that you have forwarded the correct protocol, I can't remember if it is TCP or UDP that is needed, but if you have one - try the other (or both!)"

Guest [Entry]

According to this, you need to forward a 5800 as well.

Guest [Entry]

I'm betting (could be wrong) that you probably actually need to forward 5901/5801. Doesn't VNC add the display number to the port you select? The first display number is 1. Been awhile since I messed with VNC but just a thought.