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An alert touches multiple segments of the network, representing the challenge to reduce false positives
Deep Network Observability

How to Reduce False Positives with Shared Context

False positives are rarely caused by too many alerts, but by missing context. Let’s say a spike in outbound traffic shows up in the firewall logs. Around the same time, ...

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Magnifying glass on top of a diagram that looks like both a fingerprint and a network, representing end-to-end network troubleshooting
Network Operations

Why Most Performance Investigations Start in the Wrong Place

A padlock silhouetted against a dark background, surrounded by a spray of white particles, representing password spraying detection.
Security Operations

What Password Spraying Looks Like in Raw Network Telemetry

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khalil
Network Operations

Defining top talkers with Flexible NetFlow and AVC

I was recently on a call with a customer who wanted to know which applications use the most bandwidth

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scottr
General

Troubleshooting NetFlow over VPN tunnel

I was working with a customer last week who had configured NetFlow on four of their Cisco routers. They

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joanna
Configuration

Configuring a Cisco Catalyst 4510 Switch IOS XE 3.6

Recently I was visiting a customer on site when they mentioned they felt like they were not getting accurate

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annam
Configuration

Cisco Catalyst 6509 NetFlow Support

Cisco Catalyst 6509 NetFlow configuration has been a very popular topic in the support room lately. We have been

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Flexible NetFlow

Cisco NGA Configuration Guide

Last week I was working with a customer who needed help with a Cisco NGA Configuration (NetFlow Generation Appliance). 

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General

How to monitor VoIP Traffic

This blog aims to do one thing, show you how to monitor VoIP traffic on your network. I get

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Configuration

Nexus 7000 NetFlow Support

Lately in support we have been getting a lot of questions on how to configure Cisco Nexus 7000 switches

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Network Operations

Cisco 7600 NetFlow Problems

The cutting edge Cisco 7600 Series is an edge router that delivers robust, high performance IP/MPLS features for service

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Flexible NetFlow

Cisco Wireless NetFlow Support

Good news, with the 7.4 release, the Cisco Wireless LAN Controller will now start exporting Netflow v9 entries.  Together with

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Flexible NetFlow

VRF Aware NetFlow: Network Traffic Monitoring

Read about virtual routing first before reading this post.  VRF aware Netflow is available in Scrutinizer since v7 and in

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