It ensures you are talking to the correct server. Through "certificates," your browser verifies that the website is who it claims to be, preventing "man-in-the-middle" attacks.
SSL and TLS are no longer optional luxuries; they are fundamental requirements for any website. By encrypting data, verifying identities, and ensuring integrity, these protocols allow the internet to function as a reliable platform for global commerce and communication. Thanks to free providers, a secure web is now accessible to every site owner on the planet.
The browser and server exchange "Hello" messages to agree on which version of TLS they will use and which encryption algorithms (cipher suites) to employ.
This is the modern, more secure version of SSL. While most people still use the term "SSL" colloquially, almost all modern "SSL certificates" actually use the TLS protocol (specifically TLS 1.2 or 1.3). 2. The Three Pillars of Web Security SSL/TLS provides three essential protections:
At their core, SSL and TLS are cryptographic protocols designed to provide communications security over a computer network.
The server sends its SSL/TLS certificate to the browser. This certificate contains the server’s public key and is signed by a trusted Certificate Authority (CA).