New answers tagged ports
It's a good idea to have an external host somewhere which you control to have a more extensive test. Also if you do use a remote service checker, be sure to take some time obfuscate your endpoints. All this assumes that you are indeed the administrator of your network and machines and have enough autonomy.
This online service checks a range of ports on an IP address: http://www.ipfingerprints.com/portscan.php
Easiest way is: nmap -oX - --top-ports 1000 x This will print the XML output to the terminal which includes the exact ports. You don't need to specify a real host list either.
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