ERROR: Shared Secret is incorrect

Network RADIUS marketing at
Tue Aug 3 22:09:30 CEST 2021

** What does a "Shared secret is incorrect" error mean? 
** (And its close cousin: "WARNING: unprintable characters in password”)

The root cause for both messages is the same, and is unambiguous: The shared secret on the RADIUS server and the NAS are not the same.

However, there can be some confusion because, depending on what information RADIUS receives in the packet header, you will see either the error message or the warning.

There are also several scenarios where system administrators might think that the shared secret is the same on the RADIUS server and the NAS, when in fact, they are not.

This article will explain why those messages turn up in slightly different contexts, and how you can fix the problem.

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** What is the relationship between Network RADIUS and FreeRADIUS?
FreeRADIUS is an open source implementation of the RADIUS protocol and was written by Alan DeKok in 1999.

Network RADIUS is a private, for-profit company founded by Alan DeKok which provides commercial support for FreeRADIUS. The Network RADIUS team has been the primary contributor to FreeRADIUS for the last 20 years. The FreeRADIUS mailing list, wiki, and documentation are all moderated and maintained by the Network RADIUS team.

FreeRADIUS has always been, and will always continue to be, open source. The Network RADIUS team provides commercial support to paying clients, and free product development for the FreeRADIUS community at large.

All of our software development for FreeRADIUS is integrated into the Open Source platform, and will always continue to be.

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