I was reading some cisco articles, and I came about an article on network threats. http://informit.com/isapi/product_id...tent/index.asp
It classified port scanning as an attack under "network reconnaissance." I occasionaly port scan sites to see what services they are running. It's helped a lot in finding out which port runs a MUD server. I don't mean to search for any backdoors. Do administrators really worry about port scans? Could I ever get into legal trouble for port scanning?