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.
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Hi everyone! Happy Thanksgiving 2021. Just released – Wireshark 3.6.0!!! Why is this important to me, you, and everyone who troubleshoots Voice traffic using Wireshark? Well, there are many changes to the voice related functionality in Wireshark in this (actually as part of the 3.5.0) release. Of course, more than VoIP was updated in these …
Important Updates to Wireshark for Voice and VoIP Read More »
Hi Everyone! If you are like me, you use Wireshark every day. For me that means troubleshooting many different network situations, including Voice traffic – VoIP. Wireshark announced some significant changes coming to the Voice capabilities set within Wireshark, and I hope you are like me – extremely excited to see these. If you want …
Wireshark 3.5 Development Release adds significant voice upgrades Read More »
Here is a quick and clever technique in Wireshark. Let’s say you want to present, testify, or teach about a packet capture in Wireshark, but you want to redact information that is not important, perhaps hiding an error that was made, or some information that is private, or some other reason. Redaction is often done …
Say it isn’t true! For the first time in the world (for me) I can put a Wi-Fi interface on a Windows 10 machine into Monitor mode!!!!! Monitor Mode in Windows At Last! I know, this is boring to a few of you because you have been capable of this. You are spoiled. You are …
I got this question the other day: “What does the BGP Next-Hop-Self command actually do?” It is a great question that I tried to answer in a brief description without success, and actually repeated my answer several times. It was clear to me that my answer was not being understood in terms of a process …
What does the BGP Next-Hop-Self Command Actually do? Read More »
This article will discuss how to use some cool bandwidth monitoring tools in Linux so that you have a screen that looks like this: The first thing we will need is a multi-tab flexible terminal emulator. My choice is Tilix, but there are others like Terminator. sudo apt install tilix -y Now that you have …
Did you know that you can customize the Wireshark window title? The first time I ran across this was when using GNS3. Whenever I did a packet capture in my GNS3 environment the Wireshark window title would be changed to show which link I had done the capture on: A little digging, and I found …
If you are a Linux user, you know how important the Terminal is to your compute world. Here are Seven Awesome Linux Terminal Utilities for Everyone. Now there are a bunch of different Terminals in Linux, this article is not about that, but I like Tilix the best: sudo apt install tilix Instead, this article …
Seven Awesome Linux Terminal Utilities for Everyone Read More »
Yes yes, you can always use an IPv4 calculator to determine the IPv4 subnet addresses, and most of these are free. If you want to dig deeper into how IPv4 subnetting works, check out how I have always done this by hand. My IPv4 Subnetting Illustrated method is extremely helpful in certification classes, interview questions/tests …
Just a quick tip on how to add packet comments to your packet captures. The use cases are fairly straight forward: perhaps you want to add comments as you troubleshoot a packet capture, or perhaps you want to record what you found for later demonstration, or perhaps you just want to remember two years later …
In Wireshark 3.3.0 development release, and 3.4.0 stable release and later, you are going to find a hidden gem. Wireshark call this the Packet Diagram, and I absolutely love it. Let’s say you are a pen-tester or a test engineer who is looking at a packet capture and you want to document what is happening …
In Wireshark 3.4.0 stable release and later, you are going to find a display button feature that we have already leveraged to change all our profiles. We now have the ability to nest display filter buttons, and I absolutely love this feature. One of the cool things about being able to customize Wireshark is to …
Nested Display Filter Buttons feature in Wireshark Read More »
In this article we will get you started with the iPerf tool. We will be using it in a Linux environment, but know that it is available for all systems at http://iperf.fr. iPerf is used to test performance, throughput, packet loss, and jitter on TCP/IP networks. iPerf defaults to testing TCP – port number 5002. iPerf …
Getting started with iPerf – an illustrated step by step procedure Read More »
Just like out article on Network Management Tools (you can read/view that list here), I wanted to compile a list of Networking Utilities and Tools in this article. Frankly, this is a bit of challenge as what tools are available depends on operating system, version and such. Much also depends on what point of view …
Check out these great references as well: Our custom profiles repository for Wireshark Our Udemy course on Wireshark Our Udemy course on Wireless Packet capture Whenever your web browser connects to a web server using HTTPS, a secure connection is established, keys are exchanged, and the traffic is encrypted. We won’t spend any time in …
