Port vs Socket

A circuit is a connection - 
A socket is an endpoint. 
A connection consists of 2 sockets

A port is a number between 1 and 65535 inclusive that signifies a logical gate in a device

A socket consists of three things:

1. An IP address
2. A transport protocol
3. A port number

For example:

• 1030 is a port.
• (10.1.1.2 , TCP , port 1030) is a socket.