The Scorched3D client uses the following ports:-

Port	Description
80 TCP	For server browsing (outgoing connections only).
27270 TCP	For game messages (outgoing connections only). This may differ depending on the game port the server is running on.
27271 UDP	For server browsing (outgoing connections only). This may differ depending on the game port the server is running on.

The Scorched3D server uses the following ports:-

Port	Description
80 TCP	For server browsing registration (outgoing connections only).
27270 TCP	For game messages (incoming connections only). This can be changed using the server settings.
27271 UDP	For server browsing (incoming connections only). When the server port is changed will always be the server port + 1.

To run a server ports 27270 TCP and 27271 UDP (or whatever ports you choose for the server) need to be accessible externally. When running a Scorched3D server behind a firewall or NAT router it may be necersary to open or forward these ports.