What type of traffic is managed by TCP port 22?

TCP port 22 is specifically designated for Secure Shell (SSH) traffic. SSH is a cryptographic network protocol that allows secure remote login and other secure network services over an unsecured network. It provides strong authentication and secure encrypted data communications between two computers connecting over an insecure network.

Using SSH is particularly important for system administrators and anyone requiring secure connections to remote computers or servers, as it protects against various security threats. Unlike options such as FTP, Telnet, or SMTP, which operate on different ports and may not encrypt data, SSH ensures that the communication remains confidential and tamper-proof.

Each of the other types of traffic mentioned operates on different ports: FTP uses TCP ports 20 and 21, Telnet uses port 23, and SMTP uses port 25. These are not associated with the secure functionalities that SSH provides, highlighting SSH's unique role in ensuring secure communications.