This section contains general information, tips and tricks, light reading, entertainment and other general fodder. Enjoy!
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 »
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
Adding Packet Comments in Wireshark Read More »
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
Packet Diagram feature in Wireshark Read More »
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
Networking Utilities and Tools Read More »
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
How to Decrypt HTTPS on Windows in Wireshark Read More »
One of the things that we have to do when capturing packets is save the packet captures to a file, so we can study them, or even send them to someone else who can help us to understand what is happening, or to send them the manufacturers as evidence of what went wrong with an
Anonymizing Capture Files and More with Tracewrangler Read More »
Microsoft has added a packet sniffing/packet capture tool in the latest Windows 10 update. We have previously discussed using the ‘netsh’ command to do packet capture in Windows (see my article here). The pktmon tool is new. What does this mean? Is it better than netsh? Does it integrate with Wireshark? Well, it means you
Packet Capture in Windows using pktmon.exe Read More »
Check out these great references as well: Our Wireless custom profile for Wireshark Our Udemy course on Wireless Packet capture Our other Wi-Fi related articles Ok all you MAC users, here is the way you capture Wi-Fi/WLAN frames using your MAC and Wireshark. First, MAC users get a really easy time of putting their interface
Capturing Wi-Fi WLAN Packets in Wireshark on MAC OSx Read More »
Check out these great references as well: Our Wireless custom profile for Wireshark Our Udemy course on Wireless Packet capture Our other Wi-Fi related articles There are several other articles that we have written on various Windows 10 WLAN/Wi-Fi commands that you can execute to perform various important wireless information gathering and management. We will
Windows 10 WLAN/Wi-Fi Commands of Interest Read More »
