Alan, Sorry I don't reply to your original mail, but I received it at home, and now I'm at work. My problem was I was receiving this error: # /bin/echo 'Framed-IP-Address=192.168.1.197' | /home/radius/bin/radclient -d /home/radius/etc/raddb/ -x aaa.aaa.aaa.aaa disconnect secret Sending Disconnect-Request of id 196 to aaa.aaa.aaa.aaa:1700 Framed-IP-Address = 192.168.1.197 rad_recv: Disconnect-NAK packet from host aaa.aaa.aaa.aaa:1645, id=196, length=20 radclient: received response to request we did not send. You told me the problem is I'm sending packet to port 1700 and receiving the reply from port 1645... but how can I fix this?? I tried using: # /bin/echo 'Framed-IP-Address=192.168.1.197' | /home/radius/bin/radclient -d /home/radius/etc/raddb/ -x aaa.aaa.aaa.aaa:1700 disconnect secret but I receive the same error, and with: # /bin/echo 'Framed-IP-Address=192.168.1.197' | /home/radius/bin/radclient -d /home/radius/etc/raddb/ -x aaa.aaa.aaa.aaa:1645 disconnect secret I get no response from NAS.. Thanks again! Juan