I changed the configuration of a fresh install with all updates posted from SERVER-GATEWAY to SERVER-ONLY. I then changed it back to SERVER-GATEWAY, and all external ports were closed. I found no way of re-opening them other than a new, fresh install. I had tried to re-select SERVER-ONLY, reboot, and make the change again, but that did not work.
Any ideas? The problem is solved for me, but I think it still exists.
Chaloner Hale