Access/restore backups over internet

Hi guys, I’ve been testing urback for the past week and so far am loving it! I have a question regarding client side “Access/Restore backups” feature. I’ve populated the URL in the server settings, but the page times out on the clients.

Here’s my setup:
DDNS URL that points towards an IIS server at my IP. urback server is a separate server inside the same WAN IP. The urbackup port is forwarded on my firewall to the proper local IP. I’ve tried manually entering the WAN IP as well but to no avail. Are there other ports that need to be opened?

Figured it out!

I had only forwarded TCP ports on the firewall. Once I forwarded TCP/UDP, everything works properly.