Just use the old "How to get help from the Linux crowd" trick.
You Don't:
Q.) Hi. I'm trying to get NFS working through my firewall. What ports do I need open?
A.) RTFM n00b. Here's a hint, "man nfs"
You Do:
Q.) It's impossible to run NFS through a firewall, I've been trying forever! Linux blows.
A.) NFS will work through a firewall! Just open UDP port XXX and make sure the client has permision in the export file, /etc/exports. Further, you might have trouble with the portmap daemon........ Linux is great, this is all well documented exactally here(link), step by step blah blah blah.. If you need any help my e-mail is ...
Translate this for your favorite Amiga hardware/software question, and watch as the answers fly onto your screen.
I'm of course just kiddings. These are the friendliest bunch of Europeans ever! I feel awesome to be a part of it.
Bye.