I am running a few servers on my computer including an FTP server and Apache, and HTTP server. Ports 80 and 21 need to be forwarded to my computer from my router. I have zone alarm's firewall settings set to the higest level both for trusted and internet zones. When I run the scan at "grc, sheilds up" it says these ports are open. Is this safe? I need these ports to be forwarded, but is there a way to set it up so the ports are still available to my computer, but are stealthed when i run the scan?

Operating System:Windows XP Home Edition
Software Version:
Product Name:ZoneAlarm (Free)