"Iptables requires elevated privileges to operate and
must be executed by user root, otherwise it fails to function. On
most Linux systems, iptables is installed as /usr/sbin/iptables and
documented in its man page, which can be opened using `man
iptables` when installed.
"For a basic guide to iptables, I suggest the excellent Ubuntu
"In this article I will try to show some unusual use of the