The last step is to configure your Radius client (e.g. a VPN or a firewall appliance) to use your DualShield Radius server as the external authentication server. 

The process of configuring Radius settings in a VPN or firewall appliance varies according to its manufacturer. You need to refer to the operators manual of the appliance itself. Below is an example:

We have instructions for some of the popular ones, such as Cisco,  Citrix, SonicWall, F5, Juniper, NetMotion etc.