Yes, that was also discussed in the tech note I linked to.

and that Airport doesn't map UDP? It took me an agonizingly slow 5 minutes to find that out. And yes, my Airport is set up to bridge.


If your airport is setup to bridge, then port mapping shouldn't be an issue since there's no network translation involved.

In any case, AFAIK, Filemaker only uses UDP to scan the network, meaning that if UDP is getting blocked somehow, the Filemaker server won't appear in the available servers list. However, you should still be able to specify a host to connect to and manually enter the IP address of the server.