20. Autheticating Wireless Clients

Question 1

What are the 4 types of authentication?

Answer 1

• Open Authentication
• Authenticating with a pre-shared key
• ## Authenticating with EAP

Question 2

.

Answer 2

.

Question 3

What is Authenticating with a pre-shared key?

Answer 3

A client authentication mode with WPA (wifi protected access)

Question 4

What are the authentication modes supported by WPA?

Answer 4

PSK or 802.1x

Also know as personal mode & enterprise mode

Question 5

How does PSK work?

Answer 5

The client and AP both have a key configured. With a 4-way handshake it is exchanged

Question 6

What is the difference between WPA 1/2 and 3?

Answer 6

WPA3 uses Simultaneous Authentication of Equals. With this both client and AP can initiate the authentication process

Question 7

What is EAP

Answer 7

Extensible Authentication Protocol

Question 8

What does EAP do?

Answer 8

It defines a set of common functions that actual authentication methods can use to authenticate users

Question 9

What are the 802.1x entities?

Answer 9

• Supplicant
• Authenticator (WLC)
• Authentication server