nadzoring.network_base.service_on_port module¶

Service name resolution for port numbers.

nadzoring.network_base.service_on_port.get_service_on_port(port: int) → str[source]¶

Return the service name associated with a given port number.

First queries the system service database via socket.getservbyport. Falls back to a built-in mapping of common ports when the system lookup fails, and returns "unknown" if the port is not recognised by either.

Parameters:: port – Port number to look up. Expected range is 0-65535.
Returns:: Lowercase service name (e.g. "http", "ssh"), or "unknown" when the port is not recognised.

Examples

>>> get_service_on_port(80)
'http'
>>> get_service_on_port(22)
'ssh'
>>> get_service_on_port(9999)
'unknown'