Port Forwarding Testing Tool

What is Port forwarding tester?

Port forwarding tester tool is a simple and free online tool for checking open ports on your computer or device. It is often useful in testing port forwarding settings on a router. If you’re facing connection issues to your program (email, IM client, etc.), the port required by the application may be blocked by your router’s firewall or your ISP. This tester tool helps you diagnose any problem with the firewall setup.

You could also find this useful for security purposes if you’re not sure whether a particular port is open or closed. Hosts or games like Minecraft use this checker to make sure the server port (25565) is properly configured for port forwarding, allowing only friends to connect to the server.

Enter any custom port number (Home) to check. This tool detects your device’s external IP address as the target IP address (the device through which you’re visiting this web page), However, you can change the IP input field.

Note: When using VPNs or Proxy servers, you may not be able to get the IP address of the device correctly.

Understanding

IP-address or port number is translated to a new target, and accepts and forwards the package (using the routing table). Connect the remote computer with a specific program running on a computer (Private LAN, Local network). Allow (SSH) access to a specific computer or server, such as a private LAN. Read More on Wikipedia.