ports in use question - Mailing list pgsql-sql

I have started my pg installation using port 5444 (with the -p 5444 
switch). Everything is working fine inside my installation with the 
internal ip number (a 192.168 number). I created a tunnel in my 
firewall to point to the linux box running pg with the port 5444 open. I 
can not seem to get to the server from outside. 

does anything else need to be opened to talk to the pg machine? is 
pg talking on some other port?

thanks a million,

Ted