AutoUPnP

DOESN'T OPEN IPv6 PORTS!

AutoUPnP

AutoUPnP will automatically open and close your server's ports when needed (meaning while it's on).

There's no need to do anything on your router's interface other than turning UPnP on (Which usually, by default, it is). No need to know the password. Simple and quick.

Commands

Open port:
Usage: /open-port <InternalIPv4> <internalPort> <externalPort> <Protocol> <Description...>
Example:
For this example our internal IP is 192.168.1.100

/open-port 192.168.1.100 25565 25565 TCP Minecraft Server

Now port 25565 is forwarded

Close Port:
Usage: /close-port <Protocol> <external port>
Example:
We'll use the previous example and assume port 25565 is open.

/close-port TCP 25565

List Ports:
Usage: /list-ports

Reload Ports:
Usage: /reload-ports