ntop shows network usage in a way similar to what top does for processes. ntop acts as a Web server, creating an HTML dump of the network status. ntop can acts as a probe/collector for popular protocols such as Cisco NetFlow and sFlow.
Whats New in this Version
This release adds support for IPv6, FibreChannel, NetFlow v1/v9 (in addition to v7/v5), nFlow, AS (Autonomous Systems), and VLAN. It adds a new versioning facility, has had large portions of the user interface rewritten, along with the graph generation, adds major enhancements to the RRD plugin, adds major enhancements to the XML export, and features major improvements for stability, memory usage, bug fixing, and portability. Follow the link and
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DETAILS