Check port forwarding

Enter Ports : (comma separated, only 5 at a time please)

About the tool

This tool checks if a port on your system is open and is connectable from the outer network/internet. Port forwarding is often setup in LAN routers, so that a remote machine can connect to a particular LAN machine on a certain port number. For example route all port 80 connects to machine

When configured correctly remote machines on internet can connect to this particular LAN machine on that specified port number. To be able to test port fowarding you have to first configure your router, then start some application