My computer on a private LAN, which connects to a router, which is connected to the internet.
Their computer is behind a belkin wireless router. I have turned the firewall and AV off for the computer that I am trying to connect to. I have also gone into the router settings and opened port 5900. (to clarify : the setting seems to be a mapping of her LAN IP to the port number. The checkmark for 'enabled' is checked, and it is her correct LAN IP address, and 5900 is the port)
I installed TightVNC server on their windows 7 computer, and it is running as a service. I am using ubuntus Remmina Remote Desktop Client. I can connect to my local windows 7 machine just fine.
When I try to connect to theirs, it hangs at 'Connecting to...'
When they go to http://canyouseeme.org to check if the port is open from the outside, the test fails (it is not open). Something is blocking it somewhere, but I cant figure out what that is.