Some viruses and other malicious programs take advantage of you having certain ports open in your PC, for theft and to jeopardize the privacy and integrity of your files.
Simple Port Tester is a simple program that can check if you have closed the ports of your computer, without having to use the system console for this. Simply add the port number to be scanned, and soon Simple Port Tester will indicate their status.
In case Simple Port Tester detects an open port, it will indicate whether there is any application listening, either in TCP or UDP. Remove all doubt and see what ports are open!