I am trying to learn the Firewall included in YAST for OES SP2. One issue
I ran into is Imanager. It says it runs on top of ports 80 and 443
(Apache). When I try to authenticate and use the tree name, it gives me
an error -634. If I change the tree name to the IP Address of a server
with a replica, I can login fine. If I disable the firewall, the tree name
can be left as tree name and it signs in just fine.

What port am I missing on the firewall to allow it to resolve the tree
name instead of using an IP Address?