asterisk users - May 2003 - Port Forward & asterisk on private IP

Hello


Is it possible to Forward ports on firewall' in SIP connections? 
I have aterisk on private IP and I want people to connet to it.

PBX is 192.168.4.4 ---FIrewall 192.168.4.1<->200.200.200.200--Internet

Will it work? FOrwarding port from 200.200.200.200 to 192.168.4.4 ?
Will people with SIP clients be able to connect with asterisk? 


-- 
Piotr Sobolewski <sobol@szczecin.tpsa.pl>