We make network security easy. With thousands of enterprises using pfSense® software, it is rapidly becoming the world's most popular open source network security solution.
Open vSwitch is a production quality, multilayer virtual switch licensed under the open source Apache 2.0 license. It is designed to enable massive network automation through programmatic extension, while still supporting standard management interfaces (e.g. NetFlow, sFlow, RSPAN, ERSPAN, CLI).
... [More] In addition, it is designed to support distribution across multiple physical servers similar to VMware’s vNetwork distributed vswitch or Cisco’s Nexus 1000V. [Less]
OPNsense is an open source,
easy-to-use and easy-to-build FreeBSD based firewall and routing platform.
OPNsense includes most of the features available in expensive commercial firewalls, and more in many cases. It brings the rich feature set of commercial offerings with the benefits of open and verifiable sources.
ipt-netflow is high performance NetFlow exporting module for Linux kernel (up to 4.x). Designed for Linux router with heavy network load. This is netfilter/iptables module adding support for -j NETFLOW target. Designed to work efficiently w/o conntrack. Supporting NetFlow protocols v5, v9, and
... [More] IPFIX. Accounting for IPv4, IPv6 traffic, and NAT translation events (NEL). [Less]
fprobe and fprobe-ulog are NetFlow probes. fprobe - libpcap-based tool that collect network traffic data and emit it as NetFlow flows towards the specified collector. fprobe-ulog - libipulog-based fork of fprobe.
IPCAD runs captures traffic on the specified interfaces (BPF, PCAP, divert, tee, ULOG, IPQ), and records the traffic for later retrieval and analysis. Traffic exported via RSH or NetFlow.
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