iptables : Linux kernel (2.4+) firewall, NAT and packet mangling tools ( http://www.netfilter.org/projects/iptables/ )
nftables : Linux kernel (3.13+) firewall, NAT and packet mangling tools ( http://netfilter.org/projects/nftables/ )
xtables-addons : extensions not yet accepted in the main kernel/iptables ( http://xtables-addons.sourceforge.net/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a mva
For Paludis use this rsync : rsync://gentoo.zugaina.org/mva-portage
If you have a problem : ycarus(-at-)zugaina.org