Port — the numeric ID that identifies the sending or receiving data application (program), which, together with the IP address of the computer itself completely specifies the principal for information exchange on the network.

By using this service you can check the port is open, closed, or a remote host. That makes it possible to determine whether the desired service to receive incoming connections. This service can check both the TCP and UDP ports.

You want to know whether you have a port is open? Type the port number and host on which you want to test the port. You do not know your IP address? identify my IP . To test the openness of the port to a different "drive", enter its ip address or website address. Click The "Check Out".