What is HTTP/HTTPs?

HTTP (Hyper Text Transfer Protocol) is the foundational protocol used to transfer data on the web. It allows the client (like a browser) to request resources from a web server. HTTPS (Hyper Text Transfer Protocol Secure) is the secure version of HTTP, encrypting the data using SSL/TLS to protect privacy and integrity.

HTTP is widely used to access websites, but its data is transmitted in plain text, which can be intercepted. HTTPS, on the other hand, ensures a secure connection, safeguarding sensitive data such as passwords or payment details.

Example Scenario: Accessing a switches GUI over HTTP or HTTPs

A network administrator accesses the management interface of a managed switch through a web browser. The switch uses HTTPS for secure connections. This ensures login credentials and configuration changes are encrypted. The administrator configures VLANs and QoS settings. The data transmitted remains secure, preventing unauthorized interception or modification. Without HTTPS, the session could be vulnerable to man-in-the-middle attacks, especially on unsecured networks.

Default HTTP Port Number: 80

Default HTTPs Port Number: 443

A network administrator may change the default port numbers to enhance security through obscurity.

Content created by Mike Day