What TCP port is designated for HTTP over SSL (HTTPS)?

The designated TCP port for HTTP over SSL, commonly known as HTTPS, is 443. HTTPS extends the standard HTTP protocol by adding a layer of security through SSL/TLS, which encrypts the data exchanged between a web server and a user's browser. This encryption helps to ensure the confidentiality and integrity of the data being transmitted, protecting it from eavesdropping and tampering.

Port 443 is the standard used for secure communication over the web. When a web browser attempts to establish a secure connection to a server, it uses port 443 by default. In contrast, port 80 is typically used for unencrypted HTTP traffic, while ports 21 and 22 are related to file transfer protocols (FTP) and secure shell (SSH), respectively, and are not relevant to HTTPS.