Published at LXer:
Here we'll take a look at six different open and free Remote Authentication Dial In User Service (RADIUS) servers available for Linux (and other platforms). You'll find something that will work for you, whether you're supporting dial-up or VPN users, offering 802.1X for Wi-Fi security, or running VoIP. All your Authentication, Authorization, and Accounting (AAA) needs can be met on a Linux server.
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