Network Utilities

Opening Ports for Undertale using Your Router

Undertale is tobyfox, Hachinoyon, Fangamer, 8-4's Role-Playing game released in 2015.

Undertale is a roleplaying game, or simply RPG. Role-Playing Games give you many, many hours of game play where you can explore a sometimes huge new world through the eyes of your own character. They are usually the longest style of game with the most detailed story lines. Popular RPG titles include Skyrim, World of Warcraft, and Fallout.

Forward Ports for Undertale

When you are playing Undertale you might need to forward some ports in your router. Forwarding ports is a useful trick in gaming because it can really help to make your network connection most stable and on occasion even faster. Routers were not designed to allow incoming network requests and some games can play tremendously better if an incoming connection is forwarded through the router to the game.

Before You Forward a Port

Before you can forward a port you need to know the following things:

  • Your router's IP address.
  • The IP address of the device that the game will play on: either your computer or your console.
  • A list of TCP and UDP ports to forward.

How to locate your Router's IP Address

The easiest way to find your router's IP address is to run our free Router Detector utility. It's a part of the Network Utilities suite of tools and it's completely free to use.

How To Forward Ports

Don't have time? Use our Network Utilities software. It's the fastest way to both open and close ports in your router. Of you can do it manually if you want.

The process for forwarding a port is generally:

  • Open a web browser and navigate to your router's IP address.
  • Find your routers port forwarding section.
  • Put the IP address of your computer or gaming console in the proper box in your router.
  • Put the TCP and UDP ports for your game in the corresponding boxes in your router.
  • Sometimes you have to reboot your router for the changes to take effect.

Which Ports Does Undertale Require

The required ports that need to be forwarded for Undertale are as follows:

Undertale - PC

  • We do not know the PC ports for Undertale yet. If you know them please send us a message using our Message System.

Undertale - Playstation 4

  • TCP: 1935,3478-3480
  • UDP: 3074,3478-3479

Undertale - Switch

  • TCP: 6667,12400,28910,29900,29901,29920
  • UDP: 1-65535

Undertale - Steam

  • TCP: 27015-27030,27036-27037
  • UDP: 4380,27000-27031,27036

We have guides that are custom tailored for Undertale that will show you the incoming connection ports.

That should do it; your ports are now forwarded. Need something else forwarded? Check out our list of games and programs.

Jason Bauer

Jason Bauer

Jason Bauer is an owner and programmer for PortForward. You can find more of his articles in the Games and Applications section of our site.