Radius And Tacacs; Authentication And Accounting Screens; Radius Server Setup; Figure 74 Advanced Application > Auth And Acct - ZyXEL Communications Dimension GS-2024 User Manual

Chapter 19 Authentication & Accounting

19.1.2 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 44 RADIUS vs TACACS+

Transport
Protocol
Encryption

19.2 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 74 Advanced Application > Auth and Acct

19.2.1 RADIUS Server Setup

Use this screen to configure your RADIUS server settings. See
more information on RADIUS servers. Click on the RADIUS Server Setup link in the
Authentication and Accounting screen to view the screen as shown.
140
RADIUS
UDP (User Datagram Protocol)
Encrypts the password sent for
authentication.
TACACS+
TCP (Transmission Control Protocol)
All communication between the client (the
Switch) and the TACACS server is
encrypted.
Section 19.1.2 on page 140
GS-2024 User's Guide
for