yum install perl-Net-SSLeay

http://mainfacts.com/ip-address-space-addresses

https://help.ubuntu.com/community/BIND9ServerHowto

http://www.rmalekghasemi.ir/file/forward and reverse bind.pdf

http://lubos.rendek.org/remove-all-iptables-prerouting-nat-rules

iptables -t nat -A PREROUTING -i eth0 -p udp -m udp --dport 514 -j REDIRECT --to-ports 5514

iptables-save

https://www.digitalocean.com/community/tutorials/how-to-set-up-a-firewall-with-ufw-on-ubuntu-14-04

http://askubuntu.com/questions/7099/how-can-i-open-a-range-of-ports-in-ubuntu-using-gufw-for-use-with-membase

https://ubuntuforums.org/showthread.php?t=1879307

http://www.rmalekghasemi.ir/file/keygenvm5.5.exe

How to install Graylog2 on Ubuntu 14.04

Thank You Log Server