You should read below link firstly.

http://wiki.freeradius.org/index.php/FAQ#radkill

Robin

From: freeradius-users-bounces+freeradius=itpm.net@lists.freeradius.org [mailto:freeradius-users-bounces+freeradius=itpm.net@lists.freeradius.org] On Behalf Of john decot
Sent: Monday, December 20, 2010 10:41 AM
To: freeradius-users@lists.freeradius.org
Subject: Radkill

Hi,

I have problem with some user not being terminate even logout. After googling I came know about radkill. Can anyone post some howto about radkill.

Thank you,

Rgds,
John.