ipset добавлено пользователем evilman_home. permanent link
http://workshop.netfilter.org/2013/wiki/images/a/ab/Jozsef_Kadlecsik_ipset-osd-public.pdf || http://video.dkuug.dk/media/faster-firewalling-with-ipset-by-jozsef-kadlecsik
CalcScript v. 1.1
Author: mdma special for #linux channel on RusNet. 2011