pmacct: PMACCT: a small set of passive network monitoring tools
pmacct:
pmacct: pmacct is a small set of passive network monitoring tools to
pmacct: measure, account, classify, aggregate and export IPv4 and IPv6
pmacct: traffic; a pluggable and flexible architecture allows to store
pmacct: collected network pmacct: data into memory tables or SQL databases
pmacct: and export them through NetFlow or sFlow protocols to remote
pmacct: collectors. 
pmacct:                     
pmacct: http://www.pmacct.net
pmacct: With support to MySQL