Aaa Screens; Radius Server Setup - ZyXEL Communications 43222612 User Manual

track when users log in, log out, execute commands and so on. Accounting can also record system
related actions such as boot up and shut down times of the Switch.
Local User Accounts
By storing user profiles locally on the Switch, your Switch is able to authenticate and authorize users
without interacting with a network AAA server. However, there is a limit on the number of users you may
authenticate in this way.
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 109 RADIUS vs. TACACS+
Transport
Protocol
Encryption

25.2 AAA Screens

The AAA screens allow you to enable authentication and authorization or both of them on the Switch.
First, configure your authentication server settings (RADIUS, TACACS+ or both) and then set up the
authentication priority, activate authorization.
Click Advanced Application > AAA in the navigation panel to display the screen as shown.
Figure 191 Advanced Application > AAA

25.3 RADIUS Server Setup

Use this screen to configure your RADIUS server settings. Click the RADIUS Server Setup link in the AAA
screen to view the screen as shown.
Chapter 25 AAA
RADIUS
UDP (User Datagram Protocol)
Encrypts the password sent for
authentication.
GS2220 Series User's Guide
TACACS+
TCP (Transmission Control Protocol)
All communication between the client (the Switch)
and the TACACS server is encrypted.
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