hello friends I'm desperate because I have to support my graduation project in 1 week and the radius server AROJA me this error: Error binding to 0.0.0.0 port for port 1812 I'm using Debian 8 jessie FreeRADIUS Version 2.2.5 only localhost and the server works in clients.conf. radtest project radtest 123 1812 testing123 192.168.0.1 (router) does not work I got the solution "killall freeradius" but I run it stops working the radtest project radtest 123 127.0.0.1 1812 testing123 (localhost) radtest project radtest 123 1812 testing123 192.168.0.2 (server radius ________________________ the ports no listen freeradiu 2478 freerad 39u IPv4 17470 0t0 UDP *:radius freeradiu 2478 freerad 40u IPv4 17471 0t0 UDP *:radius-acct freeradiu 2478 freerad 41u IPv4 17472 0t0 UDP localhost:18120 freeradiu 2478 freerad 42u IPv4 17473 0t0 UDP *:1814 freeradiu 2478 freerad 43u IPv4 17474 0t0 UDP *:34602 thanks in advance. please help me ... and excuse me for my English