Vermont (VERsatile MONitoring Toolkit) is an open-source software toolkit
for the creation and processing of network flow data, based on monitored
Internet packet data. The IETF standard IPFIX (IP Flow Information eXport)
defines the formats and procedures for handling these flows.
Furthermore, the Netflow.v9 and the PSAMP (Packet Sampling) standards are
supported. It can receive and process raw packets via PCAP as well as
IPFIX/Netflow.v9 flow data.