Network+™ Fast Pass

2.12. Identifying Well-Known Ports Associated with Services and Protocols

Now that we have discussed the general nature of ports, let's look at much more specific information about well-known ports. Although there are 1,024 well-known ports, only a handful of these are commonly used on networks. The ones that are used most frequently are not arranged in any logical order in regard to their use, so unfortunately the only way to remember most of them is to memorize them. In this section, we will pair up each of the most commonly used well-known ports with its protocol, service, or application.

2.12.1. Critical Information

You should be able to identify the port number that each of the most common network protocols, services, and applications ...