Author name: Andrew Walding

My short bio can be viewed here: https://www.evernote.com/l/AKglxPOzlV9E7LHKvPsGzgs-SY3McII8E24

What is the ‘nslookup’ command, and how can I use it?

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The nslookup command is a built-in network administration tool available on Windows, macOS, and many Linux distributions. It is used to query DNS servers to retrieve information about domain names, IP addresses, and DNS records. Basic Syntax: nslookup [hostname] [DNS server] Components: Common Use Cases: Example Output: Query a Domain: nslookup example.com Output: Server: dns.googleAddress: […]

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What is the ‘dig’ command, and how can I use it?

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The dig command, short for “Domain Information Groper,” in Linux or MacOS is a command-line tool used to query Domain Name System (DNS) servers. The command is a lot like nslookup, but at the same time it is different. If you are a Windows user, you have to use nslookup. For a reference on nslookup

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Recognizing WLAN Retransmissions is a Critical Skill

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Retransmissions of frames in WLANs (Wireless Local Area Networks) can become problematic for several reasons, primarily due to the nature of the wireless medium. While retransmissions are a necessary part of ensuring data integrity in unreliable networks, they can cause inefficiencies and degrade network performance. I will get to the details below, but let’s start

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Automatically Switch Configuration Profiles in Wireshark

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As most of my readers, students, and clients know, I absolutely love Wireshark. I deeply am infatuated with Wireshark’s Profiles, more properly called configuration profiles. So much so that many years ago now, I set up the first Wireshark Profiles Repository. 100’s of thousands of downloads have resulted, and I hope I have helped the

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