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RADIUS Authentication and Accounting
Contents
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Authentication Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-3
Accounting Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4
RADIUS-Administered CoS and Rate-Limiting . . . . . . . . . . . . . . . . . . . 5-4
SNMP Access to the Switch’s Authentication Configuration MIB . . . 5-4
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5
Switch Operating Rules for RADIUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6
General RADIUS Setup Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-7
Configuring the Switch for RADIUS Authentication . . . . . . . . . . . . . 5-8
Outline of the Steps for Configuring RADIUS Authentication . . . . . . 5-9
1. Configure Authentication for the Access Methods
You Want RADIUS To Protect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-10
2. Enable the (Optional) Access Privilege Option . . . . . . . . . . . . . . . . 5-13
3. Configure the Switch To Access a RADIUS Server . . . . . . . . . . . . 5-15
4. Configure the Switch’s Global RADIUS Parameters . . . . . . . . . . . 5-17
Using SNMP To View and Configure
Switch Authentication Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-21
Changing and Viewing the SNMP Access Configuration . . . . . . . . . . 5-22
Local Authentication Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-24
Controlling Web Browser Interface Access . . . . . . . . . . . . . . . . . . . . 5-25
Commands Authorization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-26
Enabling Authorization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-27
Displaying Authorization Information . . . . . . . . . . . . . . . . . . . . . . . . . 5-28
Configuring Commands Authorization on a RADIUS Server . . . . . . 5-28
Using Vendor Specific Attributes (VSAs) . . . . . . . . . . . . . . . . . . . 5-28
Example Configuration on Cisco Secure ACS for MS Windows 5-30
Example Configuration Using FreeRADIUS . . . . . . . . . . . . . . . . . 5-32
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