What protocol is used by Port 22 for administrative connections?

Port 22 is designated for the Secure Shell protocol, commonly referred to as SSH. This protocol is primarily used for secure remote administration and management of network devices and servers. It provides encrypted communication and protects data integrity, confidentiality, and authenticity during transmission. SSH serves as a secure alternative to older protocols like Telnet or FTP, which transmit data in plaintext and can expose sensitive information such as passwords to eavesdropping.

In addition to being utilized for remote login, SSH also allows for secure file transfers and can facilitate secure tunneling of other protocols. Its strong encryption mechanisms and robust authentication processes make it a fundamental tool for IT security, ensuring that administrative connections to systems over potentially insecure networks remain protected.