Its been a loooong time since I did this, but I think that you can identify the machine with Samba.
As things are right now, can you transfer files between the machines?
Hmmm, after looking at the
amiga samba page, its shows that you can set the hostname in miami under the tcp/ip tab in the field called hostname.
Check the link above and go to the install guide 'setup miami' tab.
-Thorrin