How to install Dma radius manager in centos 6.9 First Install Centos 6.9 Download From this link http://mirror.nsc.liu.se/centos-store/6.9/isos/x86_64/CentOS-6.9-x86_64-minimal.iso And connect using putty and Run command step bye step like this # yum update if reppo not working # curl https://www.getpagespeed.com/files/centos6-eol.repo --output /etc/yum.repos.d/CentOS-Base.repo and tray again # yum update install text editor nano # yum -y install nano stop and close firewall # service iptables stop # service ip6tables stop # chkconfig iptables off # chkconfig ip6tables off Disable Selinux # nano /etc/selinux/config Before After Now Starting Installtion for dma radius manager # yum install epel-release # yum install mc wget crontabs vixie-cron make gcc libtool-ltdl curl mysql-server mysql-devel net-snmp net-snmp-utils php php-mysql php-mcrypt php-gd php-snmp php-process ntp se...