That, or multiple public IP addresses and doing outbound NAT for each switch to its own IP address.

Ok, you are not going to believe this, but I fixed it. Found a random post on the internet suggesting to disable all lan cards not being used. I diabled my hyperv nic and all others not in use and it worked perfectly.

Yes, I would have expected that to show open. I would think 99.9% of connecting clients are behind NAT.

You could try opening UPnP without any restrictions and see if that allows it. Then check to see what it's actually opening.

Steve

Sorted - didn't reboot the switch and it was running on its DHCP address instead of its fixed IP. All good, I'll see if I can close this topic.

Hi - Did you ever get this figured out? I am having the same issue. PS4 1 works fine, PS4 2 has issues in online games, specificly COD.

Can I ask why you are going to let them connect directly, and not just have your servers listed in the Steam Client? I run Ark boxes as well, and all mine are listed in the Steam client for them to use. This is how the game is designed to run, and is probably why you are seeing this problem.

Change NAT type from Strict NAT to Open NAT on your PS4 or Xbox console. Enabling UPnP is simple as it can be enabled through your router.

Hi all,

I got it working now. I put the router into AP mode instead of router which gave it a 192.168.1.0/24 address instead of a 10...*/24 address. After that, I set up a static IP and changed the NAT type to hybrid for the specified IP. Mods, please feel free to close the post as I should have read the pinned thread to begin with.

Exactly😂

@DaReaLDeviL simply google it, you can find all the stuff that you need.

This thread became a spam trap ....

I found this command on reddit it seems to work if on PC with Xbox App:
netsh int ipv6 set teredo enterpriseclient
https://www.reddit.com/r/killerinstinct/comments/4cklwu/fix_for_teredo_error_client_on_managed_network/

Hello,

I did a full howto for Xbox One without UPnP/DMZ.

Topic : https://forum.netgate.com/topic/144291/howto-multiples-xbox-play-together-without-upnp-dmz
Howto : pdf : https://forum.netgate.com/assets/uploads/files/1560932072924-pfsense_multiples_xboxone_v0.1.zip

Firewall and NAT Fundamentals on pfSense

https://www.youtube.com/watch?v=h2XaZxgms5A

Probably static outbound NAT if only one client can connect.

https://forum.netgate.com/topic/137605/multiple-ps4s-xbox-ones-and-pcs-used-for-gaming/

Steve