Which protocol is primarily used for secure communication over a computer network (HTTPS uses port)?

HTTPS (HyperText Transfer Protocol Secure) is a secure version of HTTP used for transmitting data between a web browser and a web server over a computer network. It protects sensitive information such as passwords, login credentials, payment details, and personal data by encrypting the communication using TLS (Transport Layer Security). HTTPS normally uses TCP port 443, whereas standard HTTP generally uses port 80. The use of HTTPS helps provide confidentiality, data integrity, and server authentication, reducing the risk of attackers intercepting or modifying information during transmission.