Online Port Scanner determines lively services on the host using TCP/UDP port interrogations. Port Scanner will check which TCP or UDP ports are listening. You can test these ports to see if they are runniOnline Port Scanner determines lively services on the host using TCP/UDP port interrogations. Port Scanner will check which TCP or UDP ports are listening. You can test these ports to see if they are running. It is recommended that any services which are not necessary be disafخرید کتاب the most significant goal of thise port scanning will be to verify your firewall rules and filters are performing as planned. To do this, you need scan ports that appear ose Online Port Scanner to scan individual ports to determine if the device is listening on that port. Port Scanner will analyze given ip (url) for open ports to help you secure it.an individual ports to determine if the device is listening on that port. Port Scanner will analyze given ip (url) for open ports to help you secure it.