Hi,

1. If I enter service radiusd reload command in linux than freeradius process dead. 2. Sometime, I enter radtest command than no response from service (process was running in that time) 3. After I install mod_auth_radius to apache and configure complete but apache can't connect radius.

well, 2 and 3 occur because of number 1. but if the server is running at the time then you have to check eg firewall rules or SELINUX reports for number 1 - does the daemon have the rights to read its config files and to write its config files - eg the user/group that you run radiusd as - when you run as root in debug mode it happily writes/reads what it wants. alan