Which port is commonly used by SSH by default?

Which port is commonly used by SSH by default?

• A. 21
• B. 80
• C. 22
• D. 443

Answer: (C)

SSH uses a secure remote login over TCP and the default listening port for this service is 22. This standard is what you’ll see in most server configurations and firewall rules, unless an administrator explicitly changes it. So when you think of the default for SSH, 22 is the number that matches the common setup. The other ports correspond to different services: 21 for FTP, 80 for HTTP, and 443 for HTTPS.

SSH uses a secure remote login over TCP and the default listening port for this service is 22. This standard is what you’ll see in most server configurations and firewall rules, unless an administrator explicitly changes it. So when you think of the default for SSH, 22 is the number that matches the common setup. The other ports correspond to different services: 21 for FTP, 80 for HTTP, and 443 for HTTPS.