All ports needed to play multiplayer?

For security reasons, all of my routers traffic is running through a VPN. Ever since I did this, I cannot play Halo 5 Multiplayer. I can get into a lobby, but right when it starts loading the map, it kicks me out. I believe this is caused by a blocked port on my VPN. What are all the ports necessary for Halo 5? Their has to be some out of the ordinary one because I dont have this issue with any other games.

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Configure your Xbox traffic to flow outside of your VPN, hitting the net from the router. and then route all other traffic to your VPNā€¦