When Is A Lost Packet Not Lost?

I was working with a customer and started explaining the concept of what I affectionately refer to as, “application baselining”. I asked my client to pick an application to test and he chose his favorite network monitoring application.

Wireshark Trace File Reporting Using Excel

 The toughest part about packet analysis is ‘visualizing’ the packet flow. For example, an increase in packet rate, delay, etc…

A technique I like to show people in my classes and seminars. It is basically how to take a trace file and create an Excel Graph.

You can use this with any other text files, heck a guy in one of my classes used it for his hockey pool. I kid you not. Lol

Configure Cisco As A DHCP Server

 When I conduct my classes or labs I prefer to create an isolated network, the first thing we need is a DHCP server.

The other option would be to statically configure an ip address on each device and risk typos and duplicate addresses. Then there is issue of trying to assign static ip addresses to smartphones, tablets and IOT devices.

Grappling with Tech (Paul Smith)

 

It is sometimes said that we don’t choose technology, it chooses us. It is certainly possible to live in today’s world without a cell phone, a computer, or a car but it would require individuality and resolve. Whether you are an early adopter, a late-comer, or a total Luddite, sooner or later technology will hunt you down.

Which port is he on ??

 I run into this quite often where the client isn't sure which port the client is connected to.

In many cases, I do not have access to their network management system, or the network is down or worse, the documentation is dated and inaccurate. I think every network analyst should know how to do basic tasks like this one.