Networking and Computing Tips and Tricks

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Welcome to some great networking and computing tips.

Usually these have to do with how to do this or how to change that. The subjects are fairly broad when it comes to networking and we encourage both your feedback and contributions by adding comments and extending any of the tips.  If there is something you need help on or something you would like to see added here, just drop us a line from the “Contact Us” link and we will be glad to try and help.

Be careful, not all tips work on all networking equipment nor operating systems.  Also be sure to add your comments as well as read comments and questions from other readers.

You can click on the column titles to sort on the column information (for instance click on Hits to sort the articles in ascending frequency, click it again to sort in descending frequency).  You can also select tags in the tag cloud to quickly list all articles on that particular subject.

Web Sites that can be Companion Tools to Wireshark

In our prior article on companion tools for Wireshark (link), we provided a list of tools that network analysts, operations, maintainers or just curious people should consider. All these were stand alone tools. What about Internet/Web Browser based sites that you may find useful? This thought raises certain issues, like this scenario: the network is […]

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Stand Alone Companion Tools to Wireshark

Wireshark is a powerful network protocol analyzer used by network professionals for troubleshooting, analysis, development, and education. Companion tools can enhance its functionality or help in related tasks. Here are some websites and tools that can be seen as companions to Wireshark: Each of these tools has its unique strengths and can be used alongside

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How to discover what is on your LAN (IPv4 and IPv6) or WLAN

This question comes up all the time, and the answers can be quite varied. Seems simple enough at first glance, right? But the problem is that things are not simple, especially in today’s networking. Here are some issues: Now there are a myriad of reasons any of these issues could exist. This article is not

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Usage Instructions for Our Windows Networking Toolkit

If you use Windows and you are a Networking person technical or non-technical, you will find our toolkit to put all the useful Windows capabilities at your fingertips in a simple menu driven batch file. Before we start, you can download and install this toolkit here (instructions for installing are provided on that page). Here

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Using Traceroute to Determine Paths Through the Internet

How does my traffic to a site on the Internet get there? What path did it follow? These are great questions, and I will attempt to answer them in this article. When you’re on the Internet, information or requests sent from your computer don’t reach the destination computer in a single jump – or hop

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Creating an NVMe Lab – Option 1

One of the latest developments in compute and storage has been the NVM (Non-Volatile Memory) Express (aka NVMe) that has revolutionized SSD use and speed.  NVM Express (NVMe) is also known as Non-Volatile Memory Host Controller Interface Specification (NVMHCIS) – it is an open, logical-device interface specification for accessing a computer’s non-volatile storage media usually

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learn wireshark

Zero-to-Hero – Wireshark TCP Conversation Completeness

Introduced in version 3.6 and later is a new Wireshark expert analysis process called TCP Completeness. At first this was quite confusing, but once you get to know what is going on, you come to understand that you can use this new feature to find certain types of TCP issues. We included this is our

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How To Discover What is on your LAN/WLAN

Who is on my network?  Great question.  Better yet: Who is on my customer’s network?  That would be looking at the issue from a service provider’s perspective. This article attempts to answer that question with tips and tricks and tools that will help you, whether you are the owner of a network or a service provider. 

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Find and Display All Your Wi-Fi Passwords in Windows

If you have been to one of my Wireshark or Wi-Fi classes then you know I often criticize Microsoft Windows for some of its – well – inexplicable approaches to usage and security.  Here is yet another example. Windows stores several important pieces of information in Wi-Fi profiles to facilitate automatic connections to known networks

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Troubleshooting Your Network Using Port Mirroring and Packet Capture

Scenario Let’s say you have a DHCP server running on a Cisco Switch that is behaving strangely and you want to examine the traffic over a couple of hours while not creating a gigantic unmanageable capture file. A note here: I am doing this on a Cisco switch, but most all vendor switches support this

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