Configure free radius to blacklist instead of whitelist

Josh serjosh at
Mon Apr 8 18:30:13 CEST 2019

Totally understand.  Right now it's a very basic default install.  CentOS 7

yum install freeradius freeradius-utils freeradius-mysql freeradius-perl -y
Then opened up firewall ports and configured radiusd to start at boot.

Besides that nothing else is changed
I would like to configure it to have mysql host the db.  I didn't do too
much as I wanted to make sure this was possible first.

On Mon, Apr 8, 2019 at 12:26 PM Alan DeKok <aland at>

> On Apr 8, 2019, at 11:13 AM, Josh <serjosh at> wrote:
> >   Is it possible to change the behavior of freeradius so that all users
> > are allowed by default but then any users added to the db are then
> blocked?
>   Yes.
>   How?  It depends on how you're using the DB.  Perhaps you could explain
> a bit more.  How did you configure the DB?  Did you use the "sql" module?
> Did you use the normal SQL schema?  Do you have something else in the DB?
>   Questions with minimal technical content get answers with minimal
> technical content.
>   Alan DeKok.
> -
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