Cisco Cisco ISA570 Integrated Security Appliance Quick Setup Guide

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Configuring RADIUS Server Authentication
RADIUS (Remote Authentication Dial-In User Service) authenticates local and remote users on a 
network. RADIUS is a client/server system that stores the authentication information for users, remote 
access servers, VPN gateways, and other resources in one central database. You can use a Cisco 
Secure Access Control Server (ACS) or FreeRADIUS as the RADIUS server
 shows the ISA500 
in a RADIUS server topology.
        
 N
OTE
  
Before you begin, make sure that the RADIUS server is configured and is working properly.
Figure 2 ISA500 in a RADIUS Server Topology
Step 1.
Configure an SSL VPN Group Policy SSLVPNPOLICY1 and add a new group RADIUSGroup 
that share this same policy. These steps are identical to the Active Directory server steps 1 and 
step 2 on 
.
Step 2.
Specify the user authentication method. 
a. Select Users > Users Authentication.
b. Choose RADIUS from the drop-down menu and click Configure
Internal
server
ISA500
RADIUS
server
SSL VPN 
Client
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