Authentication Protocols: Types, Examples and Use Cases
Authentication protocols decide how credentials are exchanged and trust is established across your network. This guide explains FIDO2/WebAuthn, SAML 2.0, OAuth 2.0/OIDC, Kerberos, TOTP, RADIUS and NTLM, compares them by phishing resistance and use case, and maps them to NIST, PCI DSS, HIPAA and NIS2 controls.