1)manual (centos) : http://packages.ntop.org/centos/ other OS : http://packages.ntop.org 2)if WHM (mysql-libs installed for cpanel) maybe yum install pfring n2disk nprobe ntopng ntopng-data cento not run successfully. so we have to install nprobe manually : rpm -i http://home.ntop.org/rpm6/x86_64/nprobe/ --nodeps 3) now we can install 2 4) yum install redis 5) redis-server 6) fuser 3000/tcp -k 7) service ntopng stop 8) ntopng --community -e 9) nano /etc/sysconfig/iptables 10) add this to end of line : -A INPUT -m state --state NEW -m tcp -p tcp --dport 3000 -j ACCEPT 11) service iptables restart 12) EXTRA INFO ---------- -address of config file of ntopng: /etc/ntopng/ntopng.conf -delete ntopng : yum remove ntopng -know about version of centos & ntopng : centos : cat /etc/centos-release ntopng : /usr/local/bin/ntopng --version -to make an sh file (script file) for run OK after boot OS: 1)nano /etc/rc.local 2)(add file address to end of lines ) exmaple : /etc/ntopng-auto.sh 3)(make file) example : nano /etc/ntopng-auto.sh 4)fill with : service ntopng stop fuser 3000/tcp -k ntopng --community -e 5) restart server and check the log of boot : nano /var/log/boot.log