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Explain the AAA framework and its components.
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The AAA framework includes Identification, Authentication, Authorization, and Accounting to manage user access and log usage.
How does centralized authentication enhance security in wireless networks?
Centralized authentication ensures that user credentials are verified by a managed server, reducing the risk of unauthorized access.
In what scenarios is RADIUS protocol typically used?
RADIUS is typically used in scenarios like logging into routers, servers, and VPNs where remote authentication is required.
Why is logging session information important in the AAA framework?
Logging session information helps in tracking user activity, ensuring compliance, and detecting unauthorized access or anomalies.
Outline the steps in the EAP authentication process within 802.1X.
The process includes: Initial Connection by Supplicant, Authentication Request by Authenticator, and Credential Validation by Authentication Server.
Why is WPA2 vulnerable to brute force attacks?
WPA2 is vulnerable if a hash is captured during the handshake, allowing attackers to perform offline brute force attacks using GPU processing or cloud resources.
Describe the components involved in Network Access Control (NAC) under 802.1X.
NAC includes a Supplicant (user/device), an Authenticator (first network device on login), and an Authentication Server (verifying credentials).
What role does the RADIUS protocol play in network security?
RADIUS facilitates remote authentication for network access and is widely supported for logging into routers, servers, VPNs, etc.
What is the purpose of centralized authentication (802.1X) in corporate environments?
802.1X is used for centralized authentication, requiring username, password, and possibly other factors, managed by servers like RADIUS, LDAP, or TACACS.
What is SAE in WPA3, and how does it enhance security?
SAE (Simultaneous Authentication of Equals) in WPA3 enhances security by preventing the pre-shared key hash from being sent over the network and providing each user a unique session key.
How does WPA2 encryption ensure secure communication over wireless networks?
WPA2 uses a 4-way handshake during initial connection, encrypting traffic to prevent attackers from reading packets.
What is the purpose of using EAP within the 802.1X framework?
EAP (Extensible Authentication Protocol) enables authentication customization by manufacturers to meet specific needs within the 802.1X framework.
What vulnerability is associated with wireless communication?
Wireless communication vulnerability is that data is transmitted over the air, making it susceptible to eavesdropping.
What is the role of the Authentication Server in the 802.1X NAC system?
The Authentication Server validates user credentials and grants or denies access accordingly within the 802.1X system.
What advancements does WPA3 offer over WPA2?
WPA3 mitigates WPA2 vulnerabilities by using GCMP for stronger encryption and SAE for improved authentication.
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