Ports & Protocols

Ports & Protocols

A port is a 16-bit number (0–65535) that identifies a specific process or service on a host. Combined with an IP address, a port forms a socket address — the endpoint for network communication.

Port Ranges

Common Ports

Your Task

Implement two functions:

• portInfo(port) — returns an object with range ("well-known", "registered", or "dynamic") and service (known service name or "unknown")
• parseSocketAddress(addr) — parses a string like "192.168.1.1:8080" into { ip, port, service, range }