ZyXEL ENC User Guide - Page 226
x Authentication Overview, New Connection, Authentication Request, Login Credentials
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Chapter 8 Application The following table describes some key differences between RADIUS and TACACS+. Table 107 RADIUS vs TACACS+ RADIUS Transport Protocol UDP (User Datagram Protocol) Encryption Encrypts the password sent for authentication. TACACS+ TCP (Transmission Control Protocol) All communication between the client (the device) and the TACACS server is encrypted. 8.4.6.3 802.1x Authentication Overview The following figure illustrates how a client connecting to a IEEE 802.1x authentication enabled port goes through a validation process. The device prompts the client for login information in the form of a user name and password. When the client provides the login credentials, the device sends an authentication request to a RADIUS server. The RADIUS server validates whether this client is allowed access to the port. Figure 176 IEEE 802.1x Authentication Process 1 New Connection 2 Login Info Request 3 Login Credentials 4 Authentication Request 5 Authentication Reply Session Granted/Denied 226 ENC User's Guide