How to stealth ports 0 and 1 on FBSD 6.2

[Joe Vender]

I've enabled the firewall in /etc/rc.conf via:
firewall_enable="YES"
firewall_type="client"

But, ports 0 and 1 show as CLOSED, not STEALTHED at grc.com shieldsup! scan. 
I'm on a standalone desktop computer with no LAN and am using a dialup 
connection to access the internet. I've set the firewall type to "client". 
What changes do I need to make to the firewall configuration file in order to 
stealth the ports without causing any local problems?

Joe Vender