Featured Posts

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, ...

Read More
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

All Posts

jeff
Configuration

Cisco Catalyst 9500 Flexible NetFlow Configuration

Recently I’ve had many requests from customers who upgraded to the Catalyst 9500 series and are looking for a

Read More
jeff
Configuration

Configuring an ERSPAN within VMware and Cisco Switches

With the ever-growing support for flow exports, the need for probes and port mirroring has become a lot more

Read More
joanna
Configuration

How to Configure Cisco AnyConnect to Send Flow Data

Most companies have a VPN set up to allow users remote access to the company network, but that leaves

Read More
General

Cisco Nexus 9000 NetFlow Configuration

Cisco Nexus 9000 NetFlow Configuration Recently I’ve received numerous request for a sample on the Cisco Nexus 9000 NetFlow

Read More
General

Top 7 Cisco Catalyst Switches for NetFlow Reporting

My engineering contact at Cisco told me that Flexible NetFlow Performance Monitoring is now available on several of the

Read More
General

Cisco Performance Routing Netflow Reports

Cisco Performance Routing isn’t your grandfather’s routing. Cisco Performance routing (PfR for short) considers a particular path’s traffic characteristics when

Read More
Network Operations

Cisco ASA NetFlow: Configuration

There are two Cisco ASA NetFlow configuration methods; you can setup NetFlow on the Cisco ASA from command line

Read More
Network Operations

CiscoLive 2012 : NetFlow Webex

On my way to the airport tomorrow headed for London and CiscoLive 2012 to show off Scrutinizer v9 and our

Read More