Which of the following wireless network security solutions refers to an authentication process in which a user can connect wireless access points to a centralized server to ensure that all hosts are properly authenticated?
A.
Remote Authentication Dial-In User Service (RADIUS)
B.
IEEE 802.1x
C.
Wired Equivalent Privacy (WEP)
D.
Wi-Fi Protected Access 2 (WPA2)
Explanation:
IEEE 802.1X is an IEEE Standard for port-based Network Access Control (PNAC). It is part of the IEEE 802.1 group of networking protocols. It provides an authentication mechanism to devices wishing to attach to a LAN, either establishing a point-topoint connection or preventing it if authentication fails. IEEE 802.1X defines the encapsulation of the Extensible Authentication Protocol (EAP) over IEEE 802 which is known as "EAP over LANs" or EAPOL. EAPOL was originally designed for IEEE 802.3 Ethernet in 802.1X-2001, but was clarified to suit other IEEE 802 LAN technologies such as IEEE 802.11 wireless and Fiber Distributed Data Interface (ISO 9314-2) in 802.1X-2004. The EAPOL protocol was also modified for use with IEEE 802.1AE (MACSec) and IEEE 802.1AR (Secure Device Identity / DevID) in 802.1X-2010. Answer option C is incorrect. Wired Equivalent Privacy (WEP) is a security protocol for wireless local area networks (WLANs). It has two components, authentication and encryption. It provides security, which is equivalent to wired networks, for wireless networks. WEP encrypts data on a wireless network by using a fixed secret key. WEP incorporates a checksum in each frame to provide protection against the attacks that attempt to reveal the key stream. Answer option A is incorrect. Remote Authentication Dial In User Service (RADIUS) is a networking protocol that provides centralized Authentication, Authorization, and Accounting (AAA) management for computers to connect and use a network service.Because of the broad support and the ubiquitous nature of the RADIUS protocol, it is often used by ISPs and enterprises to manage access to the Internet or internal networks, wireless networks, and integrated e-mail services. These networks may incorporate
modems, DSL, access points, VPNs, network ports, Web servers, etc. RADIUS is a client/server protocol that runs in the application layer, using UDP as transport. The Remote Access Server, the Virtual Private Network server, the Network switch with port-based authentication, and the Network Access Server, are all gateways that control access to the network, and all have a RADIUS client component that communicates with the RADIUS server. The RADIUS server is usually a background process running on a UNIX or Windows NT machine. RADIUS serves three functions: To authenticate users or devices before granting them access to a network. To authorize those users or devices for certain network services. To account for usage of those services. Answer option D is incorrect. WPA2 is an updated version of WPA.This standard is also known as IEEE 802.11i. WPA2 offers enhanced protection to wireless networks than WPA and WEP standards. It is also available as WPA2-PSK and WPA2- EAP for home and enterprise environment respectively. You work as a Network Administrator for uCertify Inc. You need to secure web services of your company in order to have secure transactions.