I am unable to use my public IP address to browse Ubooquity, but I can do it locally, and from other computers on my network, including the router.
Things I have tried/confirmed:
1) Port is open on both the router and the modem. Using online port checking tools shows that it is reachable.
2) Trying with/without SSL enabled. SSL handshake does come up with a warning (since it is self-signed), suggesting they are getting the initial packets from the ssl-handing-part of the server
3) Problem exists with Windows Firewall turned on or off. There is an explicit rule for incoming connections on that port regardless.
Browsing straight to it just hangs for a long time until timing out. Using the default port.
Customer support service by UserEcho