What common port does SSH typically use?

The common port that SSH (Secure Shell) typically uses is port 22. This is the designated port for establishing secure command-line access and file transfer capabilities over a network. SSH provides a secure channel over an unsecured network by using encryption, thus it is widely used for secure logins and executing commands on remote systems.

Using port 22 allows clients and servers to communicate securely by establishing an encrypted session, which protects the data from eavesdropping and unauthorized access. This port is standardized across most implementations of SSH, ensuring consistency and compatibility across different systems and applications.

In contrast, the other ports listed serve different protocols and purposes: port 53 is used for DNS (Domain Name System) queries, port 443 is for HTTPS (HTTP Secure) traffic, and port 80 is designated for HTTP (HyperText Transfer Protocol) traffic. Understanding the function of these ports is crucial for network security and management.