Abstract
Digital certificates are electronic credentials (also known as machine identities) that are used to certify the identities of individuals, computers, and other entities on a network. In this practical how-to guide, you'll learn what about how SSL/TLS certificates work, how to tell if your site has an SSL/TLS certificate, how to check certificate validity, the differences between TLS 1.1, 1.2 and 1.3, and much more.
