http://disablessl3.com/
https://weakdh.org/sysadmin.html
http://www.netfilter.org/documentation/HOWTO/es/networking-concepts-HOWTO.html
iptables-persistent
iptables -t NAT -L
https://github.com/leebaird/discover
https://cisofy.com/
http://www.arachni-scanner.com/