Online tool to check your external IP address and detect open ports on your connection.

What is this tool for?

This tool is useful for finding out if you have set up your port forwarding correctly or if you are being blocked by a firewall.

When is port forwarding required?

Applications like Golem or Bitcoin require access to your ports, Golem Network requires ports 3282, 40102, 40103 to be open to use there application.