What does SSL stand for in network security?

SSL stands for Secure Socket Layer, which is a cryptographic protocol designed to provide secure communication over a computer network. It enables web browsers and servers to communicate with confidence, ensuring that sensitive data such as personal information, credit card numbers, and login credentials are transmitted securely. SSL works by establishing an encrypted link between the client and the server, protecting the data from interception and tampering.

Most importantly, SSL was the original protocol that laid the groundwork for secure internet communication, though it has since been succeeded by Transport Layer Security (TLS). However, the term SSL is still widely used colloquially to refer to both SSL and TLS protocols. Understanding this protocol is key for anyone working in network security, as it forms a critical part of the security infrastructure for e-commerce, online banking, and many other internet services.