Sometimes ports are opened without services attached to them. Could you post what ports were open and maybe I or someone else can explain. Also I just downloaded GFI LANguard network security scanner, and I have to say it rocks. I have scanned all the computers on my network, and found some interesting things. It has a 30 day evaluation period and I think it is still free after that it just has fewer features. They have a pro version which you pay for.

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I also scanned the ip of my router, and found something I never knew. You all know that a lot of routers have web configuration interfaces. Well when I scanned the router it told me that there was a web server and also a unix operating system. Either it was detecting a computer inside my network(not likely because the only unix like comp I have is RH9 and it detected that on a different scan) or my router is running unix. Kindof neat. Does anyone know more about this, do routers actually run their own mini OS?