All NetFlow

NetFlow Vs. sFlow: Which is better?

The few debates that have emerged over NetFlow Vs. sFlow often highlight why one technology is better than the other.  In this post, I would...

NetFlow v9 Overview: NetFlow basics

Welcome to the first installment of our NetFlow v9 Overview, beginning (of course!) with NetFlow basics. What is NetFlow? A network flow is defined...

Cisco ASR NAT: Advanced Network Reporting Solution

Did you know that using an advanced network reporting solution you can log NAT and firewall events from a Cisco ASR router to a...

NetFlow Generators: Enabling NetFlow Without NetFlow Support (Part #1)

Introducing NetFlow and IPFIX This article covers the benefits and capabilities provided by a new class of network monitoring technology called a NetFlow generator. But before...

Network Segmentation, Segregation, and Zero-Trust Design

The Zero Trust model is a relatively new network security design model that requires network segmentation and segregation of employees from critical internal resources....

Network Forensics and Incident Response Using NetFlow and IPFIX

Network forensics can be an intimidating subject. When IT personnel hear the word “forensics” they often recoil with visions of complicated software such as...

NetFlow Port Number

What is the preferred Cisco NetFlow Port Number to listen on?  Well, it depends.  The NetFlow RFC 3954 does not specify a specific NetFlow...

Nagios Network Analyzer: NetFlow Support

Nagios is one of the more popular free network monitoring solutions that can be upgraded to a commercial version.  For years this community has...

A Firewall Monitoring Tool You Didn’t Know Existed: NetFlow and IPFIX

IT professionals have been looking for better ways to monitor and store firewall logs for years. Properly handled, firewall events can give insight into...

Zenoss NetFlow Zenpack

Have you been looking for a Zenpack that would allow seamless integration of Zenoss and the NetFlow tool Scrutinizer? Well you have come to...