Fui em "System logs", no menu "Status" e mandei reiniciar o freeradius2 a informação relacionado ao freeradius2 é a senguinte:
Jun 1 18:54:39 syslogd: kernel boot file is /boot/kernel/kernel
Jun 1 18:54:42 radiusd[2636]: rlm_sql (sql): Driver rlm_sql_mysql (module rlm_sql_mysql) loaded and linked
Jun 1 18:54:42 radiusd[2636]: rlm_sql (sql): Attempting to connect to root@192.168.1.253:3306/radius
Jun 1 18:54:42 radiusd[2636]: rlm_sql (sql): Attempting to connect rlm_sql_mysql #0
Jun 1 18:54:42 radiusd[2636]: rlm_sql_mysql: Starting connect to MySQL server for #0
Jun 1 18:54:42 radiusd[2636]: rlm_sql (sql): Connected new DB handle, #0
Jun 1 18:54:42 radiusd[2636]: rlm_sql (sql): Attempting to connect rlm_sql_mysql #1
Jun 1 18:54:42 radiusd[2636]: rlm_sql_mysql: Starting connect to MySQL server for #1
Jun 1 18:54:42 radiusd[2636]: rlm_sql (sql): Connected new DB handle, #1
Jun 1 18:54:42 radiusd[2636]: rlm_sql (sql): Attempting to connect rlm_sql_mysql #2
Jun 1 18:54:42 radiusd[2636]: rlm_sql_mysql: Starting connect to MySQL server for #2
Jun 1 18:54:42 radiusd[2636]: rlm_sql (sql): Connected new DB handle, #2
Jun 1 18:54:42 radiusd[2636]: rlm_sql (sql): Attempting to connect rlm_sql_mysql #3
Jun 1 18:54:42 radiusd[2636]: rlm_sql_mysql: Starting connect to MySQL server for #3
Jun 1 18:54:42 radiusd[2636]: rlm_sql (sql): Connected new DB handle, #3
Jun 1 18:54:42 radiusd[2636]: rlm_sql (sql): Attempting to connect rlm_sql_mysql #4
Jun 1 18:54:42 radiusd[2636]: rlm_sql_mysql: Starting connect to MySQL server for #4
Jun 1 18:54:42 radiusd[2636]: rlm_sql (sql): Connected new DB handle, #4
Jun 1 18:54:42 radiusd[2636]: Loaded virtual server <default>Jun 1 18:54:42 radiusd[5410]: The server is not configured to listen on any ports. Cannot start.
tem algum erro aqui?</default>