Hi, I am fairly new to configuring FreeRADIUS, and have had to add some new clients to communicate with my RADIUS server. I don't think, that we use the clients.conf, but rather edit vi mysql-unless I'm missing something, but other clients aren't in that file. So here is what I configured: +----+---------------+---------------+-------+-------+--------+--------+-----------+----------------+ | id | nasname | shortname | type | ports | secret | server | community | description | +----+---------------+---------------+-------+-------+--------+--------+-----------+----------------+ | 30 | 172.26.248.41 | 172.26.248.41 | other | NULL | secret | NULL | NULL | mvs.bgan-burum | | 31 | 172.26.248.42 | 172.26.248.42 | other | NULL | secret | NULL | NULL | mvs.bgan-burum | | 32 | 172.26.248.43 | 172.26.248.43 | other | NULL | secret | NULL | NULL | mvs.bgan-burum | | 33 | 172.26.248.44 | 172.26.248.44 | other | NULL | secret | NULL | NULL | mvs.bgan-burum | | 34 | 172.26.248.45 | 172.26.248.45 | other | NULL | secret | NULL | NULL | mvs.bgan-burum | | 35 | 172.26.248.46 | 172.26.248.46 | other | NULL | secret | NULL | NULL | mvs.bgan-burum | +----+---------------+---------------+-------+-------+----------------+--------+-----------+--------+ Then, when I try to authenticate a device I get: Mon Mar 10 20:16:19 2014 : Error: Ignoring request to authentication address RADIUS_IP port 1812 from unknown client 172.26.248.41 port 54898 Mon Mar 10 20:28:02 2014 : Error: Ignoring request to authentication address RADIUS_IP port 1812 from unknown client 172.26.248.42 port 52687 Mon Mar 10 20:28:05 2014 : Error: Ignoring request to authentication address RADIUS_IP port 1812 from unknown client 172.26.248.42 port 52687 I have made sure that the secret is correct and not including any white space, but I don't know why this is happening. Thanks in advance for some direction. Regards, Ryan Milton c: 862-249-5230