Exam 312-50v11 topic 1 question 253 discussion

A similar questions which I don't understand the answer to: What can an Internet Service Provider (ISP) use to authenticate users? A: Proxy Gateway B: Content filter C: Packet filter D: Border router Answer: B I cannot see how content filter provides authentication, I would have said A: Proxy gateway

The Diameter protocol is also an AAA protocol like RADIUS and TACACS+, but it is designed to overcome some of the limitations of RADIUS, particularly in terms of security and scalability. Diameter is an IETF standard protocol that supports a wide range of authentication, authorization, and accounting (AAA) applications, including network access and mobile IP. It has features such as Transport Layer Security (TLS) encryption, dynamic discovery of servers, and a flexible message structure that allow for greater security and scalability. Therefore, Diameter can also handle the requirement described in the question

AAA services provided by the Diameter Protocol form the basis for service administration within the telecommunications industry, such as deciding which services a user can access, at what quality of service (QoS), and at what cost. The Diameter Protocol focuses on the application layer. AAA nodes receive positive or negative acknowledgment for each message exchanged between nodes and TCP and SCTP ensure reliability. A variety of LTE and IMS network functions make use of the Diameter Protocol, including the Policy and Charging Rules Function (PCRF), Home Subscriber Server (HSS), and Online Charging System (OCS) elements.

Wi-Fi Authentication Process Using a Centralized Authentication Server Wi-Fi authentication process, a centralized authentication server known as Remote Authentication Dial-in User Service (RADIUS) sends authentication keys to both the AP and the clients that attempt to authenticate with the AP. This key enables the AP to identify a particular wireless client. (P.2192/2176)

Remote Authentication Dial-In User Service (RADIUS) is an authentication protocol that provides centralized authentication, authorization, and accounting (AAA) for the remote access servers to communicate with the central server Radius Authentication Steps: 1. The client initiates the connection by sending an Access-Request packet to the server 2. The server receives the access request from the client and compares the credentials with the ones stored in the database. If the provided information matches, then it sends the Accept-Accept message along with the Access-Challenge to the client for additional authentication, otherwise it sends back the Accept-Reject message

correct