Question

The it team of a large multinational corporation is working to improve the security of their remote access services. they plan to implement remote authentication dial-in user service (radius) to enhance the authentication process for remote users. radius provides a centralized authentication and authorization mechanism for users connecting from various locations. the it team evaluated different authentication protocols alongside radius to ensure a strong and secure remote access solution. which choice of authentication protocols would be most appropriate to complement radius for the company's remote access solution?

a) TACACS+ (Terminal Access Controller Access-Control System Plus)
b) OAuth (Open Authorization)
c) Kerberos
d) PPTP (Point-to-Point Tunneling Protocol)

Answer 1

The most appropriate choice of authentication protocol to complement RADIUS for the company's remote access solution is TACACS+ (Terminal Access Controller Access-Control System Plus). When used together, RADIUS and TACACS+ can enhance the overall security and flexibility of the remote access solution.

Step-by-step explanation:

The most appropriate choice of authentication protocol to complement RADIUS for the company's remote access solution would be TACACS+ (Terminal Access Controller Access-Control System Plus).

TACACS+ is a protocol used for AAA (Authentication, Authorization, and Accounting) services. It provides separate authentication and authorization functions, making it a good complement to RADIUS.

When used together, RADIUS and TACACS+ can enhance the overall security and flexibility of the remote access solution.

Answer 2

The most suitable authentication protocol to complement RADIUS for a multinational corporation's remote access solution would be Kerberos, due to its robust mutual authentication and strong encryption capabilities.

Step-by-step explanation:

The IT team of a multinational corporation is seeking to pair Remote Authentication Dial-In User Service (RADIUS) with an appropriate authentication protocol for their remote access solution. Considering that RADIUS is mainly focused on authentication and authorization, it is crucial to select a protocol that complements these features and adds an additional layer of security, such as encryption.

Among the options listed, Kerberos would be the most suitable authentication protocol to complement RADIUS. Kerberos provides a robust mechanism for mutual authentication between a user and a service or between one service and another, which ensures the identity of both parties. It also establishes a secure channel through symmetric-key cryptography, which ensures data integrity and confidentiality.

While TACACS+ is an alternative to RADIUS and has similar functions, using it alongside RADIUS would be redundant. OAuth is more suited for authorization within web applications rather than for remote authentication of corporate users. PPTP (Point-to-Point Tunneling Protocol) is a VPN protocol that has known security vulnerabilities and does not strictly serve as an authentication protocol, thus making it less appropriate for enhancing RADIUS.