This is a stub for a future mini-guide on how to allow daemon and game ports in an OVH firewall. The OVH firewall is stateful and is never actually disabled, so it can suddenly be triggered by a burst of traffic, blocking access to new connections while allowing existing ones (such as previous TCP/SSH connections) to access it just fine. This can cause confusion as to why some connections are working while others are not, or why not all of your players can see/join a server.