RADIUS Authentication

RADIUS Authentication, also known as Remote Authentication Dial-In User Service (RADIUS), is a server protocol and software that allows remote access servers to be able to communicate with a central server. This was initially done in the early internet (mid 1980’s through the mid 2000’s) to authenticate dial-up modem users connecting to the Internet through AOL, Earthlink and others.

Today, RADIUS enables an organization to maintain user profiles in a centralized database (Microsoft Active Directory) and authenticate against that directory for all remote access. RADIUS allows for better cybersecurity by enabling a business to manage a single administrative source of truth (AD) to premit and deny access to a network.

Why is RADIUS Authentication important to an SMB?

There are a number of easy administration and cybersecurity benefits to setting up RADIUS authentication in an SMB.  Both your VPN (if you need one) and your Trusted WiFi networks can be authenticated using RADIUS authentication into your Active Directory.  This is important because it allows you to manage your terminations and remote access easily and effectively from a single source of trust (AD).  

When someone leaves the company, you do not need to change a static password on your Trusted WiFi network because the Employee new it and can access it from the parking lot to steal your data.  Likewise, their VPN remote access is also gone the moment a term’d employee is disabled in AD.  RADIUS authentication will fail automatically for all that term’d employees devices and VPN access.

Related Term: Authentication

To learn more about RADIUS Authentication, watch this short informational video:

https://www.youtube.com/watch?v=AGWsWGn5-sU

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