🛡️ Kerberos Authentication Flow

📚 Kerberos Components

• AS — Authentication Server. Verifies the user and issues a Ticket-Granting Ticket (TGT).
• TGS — Ticket Granting Server. Issues service tickets based on a valid TGT.
• TGT — Ticket Granting Ticket. Proof that the user has already authenticated.
• Authenticator — Encrypted timestamp proving the client's identity and freshness.
• Session Key — Temporary symmetric key used to encrypt tickets and authenticators.
• Service Ticket — Allows access to a specific service without re-authentication.
• AP-REQ / AP-REP — Application request and optional mutual authentication response.