Setting up your firewall and router to work with Microsoft Flight Simulator X: Steam Edition multiplayer
Posted by on 08 July 2015 01:18 PM

As a host, you may have to configure your Router and Firewalls to allow participants to access your PC. Firstly, you will need to set up port forwarding on your Router. The following ports need to be forwarded to your PC:

  • 6112 – TCP and UDP - Default FSX network game port. If you change your Network Settings in the game on the Multiplayer Sign In screen please change this port too.
  • 27016 – TCP and UDP - Steam Server Master Browser port. Steam talks to your host via this port.

For details on how to set up Port Forwarding for your Router, please refer to the manufacturer’s documentation.

On your PC, you must ensure that you have configured your local PC firewall to allow all incoming traffic to FSX. This will again depend on your choice of firewall so please refer to your firewall provider’s documentation.

If you are using Windows Firewall, you must ensure that your LAN is identified as being either a Home or Work network. If you are connected to a Public network the firewall constraints will prevent access. FSX, however, needs to be allowed to access Public networks so ensure your Windows Firewall correctly allows full access