Vnc Through Sbs2003


We are running a Microsoft Small Business 2003 server at work, with both PC's and Mac's. Anyone know how to make VNC connect to a MAC through this type of setup?

I'm trying to use "Chicken of the VNC" (MAC to MAC connection).

Our setup at work is configured with a firewall on the router and sbs server.

Wan side router : Public IP Address
LAN side of the router:

Wan side of the router:
Lan side of the router:

Client IPs: 192.168.1.x

Any info is greatly appreciated.