It is the morning after. Approximately 24 hours ago, Facebook, WhatsApp, Instagram, and more, went down. Why? How? From the early indications of what is being said, I don’t think the general public will ever be told the whole truth. This is especially going to be the case if there is a design problem with […]
What will be the truth regarding the Facebook Outage of 10/4/21? Read More »
CellStream, Inc. – Telecom Consulting and Training! 2-Day Instructor Led Hands On Lab Class Available in either Web Based delivery or On-Site Delivery Minimum 10 students – Maximum 20 students Course Description: Knowing the fundamentals of Wi-Fi 6 and Security as these subjects pertain to Wi-Fi/Wireless LAN Operations is
CSI-HO-035 – Wi-Fi 6 and Wi-Fi Security in the Wireless LAN 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 »
1 Day Instructor Led Technology Overview/Briefing Available in either Web Based Delivery or On-Site DeliveryWeb Based Delivery: Max class size is 50On Site Delivery: Max class size is 30 Course Description: For the first time in history, we are seeing the deployment of cellular mobile networking technology in commercial enterprises, to solve in-house business problems.
CSI-TB-006 – CBRS Solutions in the Enterprise Technical Overview/Briefing Read More »
1 Day Instructor Led Technology Overview/Briefing Available in either Web Based Delivery or On-Site DeliveryWeb Based Delivery: Max class size is 50On Site Delivery: Max class size is 30 Course Description: Google introduced one of the most significant changes to the Layered Model of telecommunications when it introduced QUIC (see our articles here, and here,
CSI-TB-007 – QUIC Redefines the Transport Layer – A Technical Overview/Briefing 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
Redaction Technique in Wireshark Read More »
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
Monitor Mode in Windows At Last Read More »
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
Cool Bandwidth Monitoring in Linux Read More »
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
Modifying the Wireshark Window Title Read More »
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
IPv4 Subnetting Illustrated Read More »
How do I install / upgrade Wireshark in Ubuntu Linux? First things first – the Wireshark downloads page is here: https://www.wireshark.org/download.html I know I have put the answer to this in other articles over the years (like this one), but I think it is appropriate to answer the question directly and specifically. Installing Wireshark in
How do I install / upgrade Wireshark in Ubuntu Linux? Read More »
Just a quick tip on how to add packet comments to your packet captures. The use cases are fairly straight forward:Â 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
Adding Packet Comments in Wireshark Read More »
CellStream, Inc. – Telecom Consulting and Training! 1-Day Instructor Led Hands On Lab Class Available in either Web Based delivery or On-Site Delivery Minimum 8 students – Maximum 16 students What Students are saying about this class: “[The instructor] explains things in a way that any of us can
CSI-HO-020-K – Wireshark Voice Analysis in a Day – 1 Day Read More »
