passivedns : A network sniffer for DNS server replies ( https://github.com/gamelinux/passivedns )
suricata : High performance Network IDS, IPS and Network Security Monitoring engine ( https://suricata.io/ )
yaf : YAF is Yet Another Flowmeter: processes packet data into IPFIX (netflow) ( https://tools.netsa.cert.org/yaf/ )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a pkalin
For Paludis use this rsync : rsync://gentoo.zugaina.org/pkalin-portage
If you have a problem : ycarus(-at-)zugaina.org