Stealth Mode Does Not Work

I’m using OS X 10.4.11. Software Update says “Your software is up to date”. My network is Airport Express Base Station V5.7.

I enabled Stealth Mode.
System Preferences > Sharing > Firewall > Advanced > Enable Stealth

Shields UP!, http://www.grc.com, shows only 9 stealth ports. The balance of the 1056 TCP ports are closed, but not stealthed.

What’s going on? Shouldn’t all ports be stealthed?

that's your airport that is reporting to shields up.

Now I See

Ahhh! So an "intruder" can be mucking around, but they haven't even breached my security at the Airport level.

I feel better now.

Many thanks,

Michael