Post Views: 2,788 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
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Post Views: 2,320 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
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Post Views: 3,865 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,
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Post Views: 3,467 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
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Post Views: 3,703 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
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Post Views: 4,103 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.
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Post Views: 6,277 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
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Post Views: 21,956 Practical BGP Fundamentals, eBGP, iBGP, Route Reflectors, and Confederations 1-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 8 students – Maximum 16 students What Students are Saying About this Class: Course Description Border Gateway Protocol (BGP) is the routing protocol used to exchange network reachability information between autonomous
CSI-HO-028-C – BGP Routing in a Day – 1 Day Read More »
Post Views: 22,549 Practical OSPF Configuration, SPF, ECMP, Area Routing, and Troubleshooting 1-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 8 students – Maximum 16 students What Students are Saying About this Class: Course Description Open Shortest Path First (OSPF) is one of the most important dynamic routing protocols used in
CSI-HO-028-B – OSPF Routing in a Day – 1 Day Read More »
Post Views: 15,412 1-Day Instructor-Led Hands-On Lab CourseAvailable through Web-Based Live Delivery or On-Site DeliveryMinimum 8 Students – Maximum 16 Students What Students are saying about this class: Course Description Wi-Fi problems can be difficult to troubleshoot because symptoms such as poor performance, intermittent connectivity, failure to connect, or unreliable applications may originate from several
CSI-HO-020-I – Wireshark Wi-Fi Analysis in a Day – 1 Day Read More »
Post Views: 3,683 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
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Post Views: 3,106 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
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Post Views: 12,284 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
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Post Views: 5,383 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. These are software programs. All these tools can be essential to troubleshooting network issues, as well as learning how the network works. If you
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Post Views: 12,095 1-Day Instructor-Led Hands-On Lab ClassAvailable in either Web-Based Delivery or On-Site DeliveryMinimum 8 Students – Maximum 16 Students Course Description Ethernet is the foundation of modern Local Area Networks and is also widely used throughout enterprise, broadband, metropolitan, data-center, and service-provider networks. Anyone responsible for installing, operating, supporting, or troubleshooting networks needs
CSI-HO-009-A – L2 Ethernet in a Day – 1 Day Read More »
