nfdump : A set of tools to collect and process netflow data ( https://github.com/phaag/nfdump )
nfsen : Graphical netflow analyzer using nfdump tools ( http://nfsen.sourceforge.net/ )
zeek : The Zeek Network Security Monitor ( https://www.zeek.org )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a vklimovs
For Paludis use this rsync : rsync://gentoo.zugaina.org/vklimovs-portage
If you have a problem : ycarus(-at-)zugaina.org