ZyXEL ES-2108PWR User Guide - Page 152
Authentication and Accounting Screens
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Chapter 20 Authentication & Accounting 20.1.2 RADIUS and TACACS+ RADIUS and TACACS+ are security protocols used to authenticate users by means of an external server instead of (or in addition to) an internal device user database that is limited to the memory capacity of the device. In essence, RADIUS and TACACS+ authentication both allow you to validate an unlimited number of users from a central location. The following table describes some key differences between RADIUS and TACACS+. Table 48 RADIUS vs TACACS+ RADIUS TACACS+ Transport Protocol UDP (User Datagram Protocol) TCP (Transmission Control Protocol) Encryption Encrypts the password sent for authentication. All communication between the client (the Switch) and the TACACS server is encrypted. 20.2 Authentication and Accounting Screens To enable authentication, accounting or both on the Switch. First, configure your authentication server settings (RADIUS, TACACS+ or both) and then set up the authentication priority and accounting settings. Click Advanced Application > Auth and Acct in the navigation panel to display the screen as shown. Figure 86 Advanced Application > Auth and Acct 20.2.1 RADIUS Server Setup Use this screen to configure your RADIUS server settings. See Section 20.1.2 on page 152 for more information on RADIUS servers and Section 20.3 on page 160 for RADIUS attributes utilized by the authentication and accounting features on the Switch. Click on the RADIUS Server Setup link in the Authentication and Accounting screen to view the screen as shown. 152 ES-2108 Series User's Guide