Post Views: 4,720 WlanHelper.exe is a command-line tool from the Windows Driver Kit (WDK) and the folks at nmap/npcap that is used to manipulate advanced Wi-Fi driver settings, especially for testing and development. It allows you to control wireless network adapter settings such as: Do You Already Have WlanHelper? It’s possible if you have installed […]
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Post Views: 2,641 Here are several VoIP troubleshooting checklists and tools, organized by focus area to help quickly identify and resolve common issues. These checklists are especially useful for IT admins, NOC teams, and VoIP engineers. Are they “the bees knees” of troubleshooting VoIP? No. In fact, if you have feedback or comments on improving
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Post Views: 1,654 This is a common and great question. Simply answered, a wider channel in Wi-Fi results in higher bandwidth and throughput because it allows more data to be transmitted simultaneously. Here’s a breakdown of why: Channel Width and Frequency Space More Subcarriers = More Data Streams More specifically, in a 20 MHz channel,
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Post Views: 2,710 As a frequent reader here will know, my Wi-Fi Analyzer of choice is called WinFi. It has been around many years as is fabulous. In version 2, and the new version 3, you can capture Wi-Fi Beacon Frames and examine them. This post will explain what you can capture and how this
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Post Views: 2,261 PJSIP is a free, open-source multimedia communication library written in C that is used for troubleshooting VoIP. PJSIP implements standard-based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE, targeting VoIP (Voice over IP) applications, including SIP signaling and media handling. You will find the project at github here. What Is
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Post Views: 2,512 This article discusses what SIP pings are, and how to use them in troubleshooting VoIP (Voice over IP) networking. A SIP ping in VoIP is a diagnostic method used to check the availability and responsiveness of a SIP (Session Initiation Protocol) server or endpoint. It’s similar in concept to an ICMP ping,
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Post Views: 6,563 When testing the Internet, there are several key tools we use in troubleshooting: one of them is ping. To verify a particular IP address is operational we “ping 192.168.0.1” from the command line to see if we get an answer back, letting us know that the system we are pinging and the
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Post Views: 1,333 At our Online School of Network Science, we have created a Network Scientist Tool Belt. This completely free resource is available for you to access, learn and add software and hardware tools to troubleshoot todays networks. You will just need to set up a free account, and the link will get you
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Post Views: 1,346 This has been a common question I get asked over the years. Frankly, I confess that I may have answered differently depending on my mood the day I was asked!! I got asked this again recently and decided to put fingers to keyboard and answer with the plusses and minuses. My answers
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Post Views: 1,825 I get asked this question all the time. It is indeed a great question. I previously posted an answer to this FAQ in 2017 – you can look at that here. I often point folks who ask to that post, but they claim it is ancient history. But is it? So I
If I want to get into Networking, what should I learn in 2025? Read More »
Post Views: 2,279 If you are new to Ansible, I suggest you read our article that defines Ansible, and shows you how to set up an Ansible lab environment to test and learn in. You can also read my article on real world use cases for Ansible right here. One of those use cases is
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Post Views: 2,085 Load balancing in data networking is the process of distributing network traffic or workloads across multiple resources—such as servers, links, or devices—to: It’s commonly used in: Here is a structured list of the load balancing algorithms used in data networking, across Layer 4, Layer 7, and routing scenarios: 1. Round Robin 2.
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Post Views: 2,431 Ansible is widely used in data networking for automating configuration, management, and compliance across diverse network devices. We published an article on what this tool is, and how you can set up a lab environment for learning this tool that you can read here. Here are real-world examples of Ansible use cases
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Post Views: 3,366 Here are my favorite books on the subject of IPv6 for reference and study. Please support us by selecting these links or you can visit my Amazon Storefront here: Did I miss one? Let me know. Also, if you want to see my top 10 books for general networking – look here.
IPv6 Books for Reference and Study Read More »
Post Views: 2,560 In this post, I want to document the fundamental algorithms built into TCP. Keep in mind that these have changed over time in an attempt to make TCP more effective with faster and larger capacity connections of todays Internet. See our post on TCP “versions” here. TCP uses several key algorithms to
