Flight Simulator X Multiplayer Ports

This article describes the ports that you must open in Microsoft Windows Firewall to play or to host a Microsoft Flight Simulator X multiplayer game. Additionally, this article describes the advantages of enabling UPnP. This article also lists the port addresses that must be open on computers that are not running Windows Firewall but instead are using a proxy server, a router, Network Address Translation (NAT), or Internet Connection Sharing.

The ports that you must open for multiplayer games are as follows:
UDP Port:23456 Inbound / Outbound
UDP Port:6073 Inbound / Outbound

UDP ports 2302 to 2400 (open the whole range)
UDP ports 6112 to 6122 (open the whole range).

Updated On: 12.04.28