Which port number is associated with the Secure Shell (SSH) protocol?

The Secure Shell (SSH) protocol is associated with port number 22. SSH is widely used to securely connect to remote servers or devices over a network, providing a secure channel for administrative access and file transfers.

Port 22 is specified by the Internet Assigned Numbers Authority (IANA) for SSH connections, making it a standard for secure remote access in various environments, including server administration and network infrastructure management. Understanding the significance of this port is crucial for configuring firewalls, implementing security protocols, and troubleshooting secure connections in networked systems.

The other port numbers listed are associated with different protocols: port 53 is used for DNS, port 68 is designated for DHCP client traffic, and port 389 is utilized for Lightweight Directory Access Protocol (LDAP). Recognizing these distinctions aids in understanding network configurations and security measures.