It’s not nmap, but then it’s not meant to be. Network Utility has a port scanner – it’s built in and really easy to use. Since Network Utility is distributed with every copy of Mac OS X it stands to reason that every copy of Mac OS X has the ability to scan a port without using a GUI tool. Enter one of the best named tools in Mac OS X, stroke. Stroke is the command line back-end to the Port Scan tab of Network Utility. To use stroke, you will need to cd into the Network Utility application bundle and then cd into Contents and then Resources. Once you are…