What does this do?
PortMiner lets you create public servers, that people can connect to externally without the need for portforwarding or Hamachi. This is because some people either can’t portforward or don’t wish to.

How does it work?
PortMiner uses Universal Plug and Play to make port mappings on your router. You are the host of the server, and the people connecting to your server connect to you directly, just like any other public server. Some programs you may use already use this. Peer to peer filesharing software uses UPnP to open the ports to allow incoming and outgoing connections, and even Skype uses UPnP for the same reason.

How do you use it?
To run PortMiner, you simply need to download a server jar, this can be Bukkit, Spigot, or you can have PortMiner download the official Minecraft server jar for you (or you can download it yourself). Any server software for Minecraft will do. Then you just need to open PortMiner, and it will open a MinTTY terminal with your server, and in the background open the ports for the server. It will keep the ports open until you close the server. Once the server is closed, PortMiner will close the ports and then close itself.

It’s not working for me.
PortMiner may not work for you for many reasons ranging from UPnP not being enabled/supported by your router, or your router may not be supported by the Cling Library (used to open the ports). Firstly, before asking for help read the “PortMiner Manual” file that comes with the application, and look in the Troubleshooting section.

Warning about port forwarding:
PortMiner uses UPnP to map ports, which is the same as port forwarding. While port forwarding itself can not damage your router, it opens a port directly to your computer, and thus can let malicous connections get through. Be sure to only share your IP address with people you trust.

I found a bug./Is it supposed to do this?/Any other question not answered in the manual, or on this page:
If you find any bugs or have any unanswered questions feel free to reply and I’ll reply next time I’m on PMC.

I am not responsible for any damage to your computer even though it is incredibly unlikely, I have to put this here.


For other Minecraft mods and hacks visit