Services Running
Many moons ago, I taught the CompTIA classes for Iron Horse University at Fort Carson in Colorado Springs. My soldiers would sit in my classroom for two weeks of instruction and hands‐on learning. So, if someone wanted to talk to one of my soldiers, they would come down the hall and into classroom 4. They needed a specific person, so they would go to that person's seat so they could talk to him or her.
As an example, let's say the soldier's name was Carla, who was seated in seat 23. So, Carla's socket was classroom.4:23. A socket is a point of ingress or egress. The combination of an IP address and a port is called an endpoint. A socket is one of the endpoints in a two‐way conversation between two programs communicating over a network. A socket is bound to a port number so we know which application that data is destined for.
The person sitting in seat 23 is like the program that is registered with the operating system to listen at that...
