A healthy network is critical to all organizations and administrators should monitor and maintain an efficient network. Monitoring NetFlow data complements packet capture activities well, enabling a more thorough picture of traffic to be created over time.
Tenable NetFlow Monitor (TFM) is a powerful tool for developing an audit trail of what has happened within a network. By analyzing the traffic collected in LCE with Tenable NetFlow, a picture of network traffic flow and volume can be built. The network devices then export the statistics as NetFlow records to Tenable Log Correlation Engine (LCE). Routers and switches that support NetFlow can collect IP traffic statistics on all interfaces where NetFlow is enabled. NetFlow is a network protocol for collecting IP traffic information and monitoring network traffic. This way, it actually covers the most critical threats that network face nowadays, such as advanced persistent threats, inside threats, and even employee abuse, unauthorized access and data leak cases.Detecting unusual or anomalous network behavior is impossible without first establishing a baseline of network activity for comparison. And, you also have a historic data archive for later investigation whenever deemed necessary. Further analysis of SIEM events can be explored thanks to NetFlow data. Unlike signature-based anti-viruses, facing known threats, this concept of not-preventing but quick-reacting is necessary for rising zero-day attacks. It compliments firewalls, centered on end points of the network, by providing inside view of the network. In general, NetFlow Analyzer software is an essential part of any security infrastructure for detecting anomalies in the network and troubleshooting threat incidents. NetFlow version 9 is the latest version, created to support advanced technologies such as MPLS, IPv6, Multicast, VLANs, etc. Version 5 is commonly used on most Cisco NetFlow enabled devices. There are numerous NetFlow protocol versions, most important of which are versions 5 and 9. NetFlow Analyzer performs all of these functions. It can then be reviewed in a more user-friendly form. This data is exported to a server, where it is collected, processed, aggregated and archived. NetFlow is a network protocol, developed by Cisco Systems, used for exporting collected IP flow traffic.
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