pmacct is a set of passive network monitoring tools to measure, account,
classify and aggregate IPv4 and IPv6 traffic; a pluggable
architecture allows to store the collected traffic data into memory tables or
SQL (MySQL, SQLite, PostgreSQL) databases. pmacct supports customizable
historical data breakdown, flow sampling, filtering and tagging, recovery
actions, and triggers. Libpcap, sFlow v2/v4/v5 and NetFlow v1/v5/v7/v8/v9 are
supported, both unicast and multicast. A client program can export
export data to tools like RRDtool, GNUPlot, Net-SNMP, MRTG, and Cacti.