Category Archives: PacketCapture

Basics of Wireshark – Session 4 – Where to Capture From

Now that we have Wireshark installed and somewhat configured, lets discuss limitations.  Although this article is not so much about…

By Manny Fernandez

February 25, 2026

Basic of Wireshark – Session 3 – Capture vs Display Filters

The Philosophy of Packet Analysis Troubleshooting isn't about looking at every packet; it’s about noise reduction. In a high-traffic environment,…

By Manny Fernandez

February 24, 2026

Basics of Wireshark – Session 2 – Ring Buffers, Color Schemes and CLI Tools

Ring Buffers A Wireshark ring buffer is a specific capture configuration used for long-term monitoring or catching intermittent network issues…

By Manny Fernandez

February 23, 2026

Basics of Wireshark – Session 1 – Setting up your Wireshark Install

I have always been interested in packet capture and packet level analasys.  I remember using Novell's LANalyzer and who could…

By Manny Fernandez

February 22, 2026

How I use Wireshark in My Daily Grind

When I am working with someone on a GTM or a Zoom type solution and I ask, "Do you have…

By Manny Fernandez

March 31, 2020

SPAN and RSPAN On Cisco Switches

Today I am going to cover a topic that I used to use regularly when I did primarily Cisco implementations.…

By Manny Fernandez

February 9, 2020

Packet Capture on FortiSwitch

While I was troubleshooting my bridging lab article, I stumbled onto a great feature in the FortiSwitch. I was instantly…

By Manny Fernandez

February 2, 2020

Creating SPAN port on Fortigate By: Brent Klespies

Here is a blog post from a friend and colleague Brent Klespies I had a customer wondering how to create…

By Manny Fernandez

May 8, 2019

Fortigate in One-Arm Sniffer Mode

Not sure if you got the 'Featured Image' (One Arm and the nose as the 'sniffer') OK.  I am done…

By Manny Fernandez

March 21, 2019

Merging PCAP files from the CLI

With the Fortigate 6Ks, when you do a packet capture from the GUI, it will save multiple PCAP files into…

By Manny Fernandez

December 3, 2018

Categories

Recent posts

  • At its core, IEEE 802.1X is a network layer... Full Story

  • In case you did not see the previous FortiNAC... Full Story

  • This is our 5th session where we are going... Full Story

  • Now that we have Wireshark installed and somewhat configured,... Full Story

  • The Philosophy of Packet Analysis Troubleshooting isn't about looking... Full Story