The use of mutual authentication is important in a wireless network. This will guard against many security issues, such as man-in-the-middle attacks. With mutual authentication, the wireless client and the wireless network must prove their identity to each other. This process uses an authentication server, such as Remote Authentication Dial-In User Service (RADIUS), to perform the authentication. Figure 8-6 illustrates the process of authentication.
Figure 8-6. Authentication Verifies the Identity of Users and Client Devices Through Credentials, Such as Passwords and Digital Certificates
802.11 Authentication Vulnerabilities