TCP port 143 is used by which protocol?

Prepare for the CCST Cybersecurity Test with comprehensive study guides and practice quizzes. Enhance your knowledge with interactive questions, complete with explanations and solutions. Excel in your exam with confidence!

Multiple Choice

TCP port 143 is used by which protocol?

Explanation:
Understanding default port assignments helps you identify which service a device is offering. TCP port 143 is the standard port for IMAP, the Internet Message Access Protocol. IMAP is used by email clients to access and manage messages on a mail server, keeping messages on the server so you can read them from multiple devices. The unencrypted IMAP runs on 143, while IMAP over TLS/SSL (IMAPS) uses 993. Other common email protocols use different ports: SMTP typically on 25 (or 587 for submission) for sending mail, POP3 on 110 (with 995 for POP3S) for retrieving mail, and HTTP on 80 (443 for HTTPS) for web traffic.

Understanding default port assignments helps you identify which service a device is offering. TCP port 143 is the standard port for IMAP, the Internet Message Access Protocol. IMAP is used by email clients to access and manage messages on a mail server, keeping messages on the server so you can read them from multiple devices. The unencrypted IMAP runs on 143, while IMAP over TLS/SSL (IMAPS) uses 993. Other common email protocols use different ports: SMTP typically on 25 (or 587 for submission) for sending mail, POP3 on 110 (with 995 for POP3S) for retrieving mail, and HTTP on 80 (443 for HTTPS) for web traffic.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy