how should i set Mcafee firewall while my computer runs as a server??

[123456programmer]

I have McAfee Personal Firewall Plus.
I actually use my computer as a my website server.
to protect my computer i wanted to put a firewall on. but i don t know how the settings should be done so that the server stay accesible to my website viewers while the firewall is running.
by the way i have a router for my internet connection.
thanks in advance.

 

[AVChap]

Create a rule in the firewall to allow ONLY HTTP incoming through port 80 only. This will prevent other apps (malicious or otherwise) from using the port.

AVChap
... WARNING: The Surgeon General says to take my advise at your own risk.

 

[123456programmer]

what about McAfee Guardian?
how can i only allow port 80?