Remote Authentication Dial In User Service (RADIUS) is an AAA (authentication, authorization, and accounting) protocol for controlling access to network resources. RADIUS servers and clients are commonly used by ISPs and corporations managing access to the internet or internal networks across an array of access technologies, including modems, DSL, wireless and VPNs.

In an era where corporates and end-users alike have come to look upon the Internet as a reliable medium for transacting business, ISPs have begun to depend a lot on the RADIUS server to ensure that such transactions are safe and secure.  This only means that even a brief non-availability of the RADIUS server, or a slowdown in authentication experienced by the server, can expose the infrastructure and the business to untold harm. If such an adversity is to be prevented, then the RADIUS server has to be continuously monitored. This is what exactly eG Enterprise does.