Final answer:
The terms Kerberos, Sesame, Radius, Tacacs, and Chap are all protocols related to network security and authentication, each with different features suitable for various scenarios, such as secure network access and user authentication for services.
Step-by-step explanation:
The terms Kerberos, Sesame, Radius, Tacacs, and Chap are all related to network security and authentication protocols. Here are the definitions and examples for each term:
- Kerberos is a network authentication protocol designed to provide strong authentication for client/server applications by using secret-key cryptography. For example, a university might use Kerberos to authenticate students and staff before granting access to its internal network.
- Sesame is a European variant of Kerberos which adds additional features like support for public key cryptography. An example could be an international organization using Sesame to provide a secure access control system across different countries.
- Radius (Remote Authentication Dial-In User Service) is a networking protocol that provides centralized Authentication, Authorization, and Accounting (AAA) management for users who connect and use a network service. An Internet Service Provider may use RADIUS to manage the access of individual subscribers.
- Tacacs (Terminal Access Controller Access-Control System) is another protocol used for AAA services and is commonly used for securing network access and auditing network use. A large corporate network might employ TACACS to regulate access to its networking equipment.
- Chap (Challenge-Handshake Authentication Protocol) is an authentication scheme used by Point to Point Protocol (PPP) servers to validate the identity of remote clients. CHAP is often utilized by ISPs to verify the identity of the modem user over a PPP connection before granting Internet access.