Each service provided over the mesh network is available at its own, fixed MDP port number which is built into the Serval DNA software. These numbers are currently assigned by senior developers on an as-needed basis as new uses of the Serval mesh network are created.
Some well-known MDP service port numbers are:
Most port numbers used as source ports are allocated temporarily, on the fly, by mesh applications that wish to connect to a remote port. When the application closes the connection, the port number is released and may be re-used by another application.