RWW Symantec Firewall

I have SBS 2003 R2 (1-NIC). I have port forwarded the router (that has the static-ip), to the server. My ISP has port forwarded 4125 on their firewall. They made a DNS record so that clients could sign into RWW from the web with a name, rather than a number.

Windows firewall is not my firewall. We have Symantec.

Do I need to forward the ports in Symantec too??

I cant access RWW via the IP or DNS name remotley.

What am I doing wrong??

ps: i dont think i have a symantec firewall. all i can find is antivirus settings.

the windows firewall gives an error regarding (ipnat.sys).

Dont i need to somehow forward ports in the server to the router???