Does anybody know what ports are used for internet sharing on Mac OS X 10.3.3? I tried opening up port 443 which was recommended in an Apple Kbase document (this port is identified as HTTP over SSL), but when my firewall is on and I'm sharing my internet connection over AirPort to my PowerBook, the PowerBook can't go anywhere on the internet. I have to turn my firewall off, and then internet sharing will work. So there has to be another port besides 443 which internet sharing uses. Anybody know?