Networking and Computing Tips and Tricks

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Discover Essential Networking and Computing Tips with CellStream!

Welcome to our vibrant hub for all things networking and computing! At CellStream, we believe in empowering you with the knowledge to master your digital world. Whether you’re a beginner looking for foundational advice or a tech-savvy enthusiast seeking advanced techniques, our Computing Tips section is your go-to destination.

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Be careful, not all tips work on all networking equipment nor operating systems.

How to Set a WLAN Frequency or Channel in Linux for Wireshark Packet Capture

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Post Views: 137 Learning how to manually control Wi-Fi channels in Linux is a foundational skill for wireless troubleshooting and packet analysis. Proper channel selection is critical because Wi-Fi troubleshooting is highly dependent on capturing the correct RF environment at the correct moment in time. When combined with Wireshark, Linux monitor mode provides one of […]

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Apply Master to ALL Notes Pages in MS PowerPoint

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Post Views: 4,338 Epiphany number 3,812!! After years and years of wondering what on earth is going on at Microsoft that they have done no feature changes of significance to PowerPoint, and frustration whenever I change the Notes Master, that I must go to every slide, one by one, and right click on the notes

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Net Neutrality at the Packet Level

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Post Views: 284 Net neutrality is typically framed as a policy debate (see my background Net Neutrality post here), but its real implications are observable in packet-level behavior. For network engineers and broadband technicians, the question is not abstract: can you see evidence of blocking, throttling, or prioritization in a packet capture? Using Wireshark, it

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Combining Wireshark Ring Buffers with Capture Filters for Performance

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Post Views: 743 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 In our previous post I showed you how to use Wireshark’s Ring Buffer feature. I think we can all agree how great that feature is. In this

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Wireshark Ring Buffer Capture Feature

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Post Views: 1,418 Check out these great references:  Our custom profiles repository for Wireshark  Our Udemy course on Wireshark   Our Udemy course on Wireless Packet capture Wireshark’s Ring Buffer feature is a capture mechanism feature that automatically rotates packet capture files based on size or time limits, overwriting the oldest files when a defined limit

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IPv6 Linux Command Line Examples

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Post Views: 1,937 Check out these additional IPv6 Resources Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School OK folks, based on some feedback from Reddit, I decided to update this post from 2013. Modern Linux distributions have largely deprecated the legacy net-tools suite (which

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Fiber Optics Primer for Technicians

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Post Views: 1,187 A broadband technician working with fiber optics must understand both the theory and the hands-on operational realities of fiber networks. The following areas represent the core knowledge required to install, maintain, and troubleshoot fiber effectively in access and distribution networks. 1. Fiber Fundamentals Technicians must understand how fiber carries data as light,

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Windows PowerShell Commands for Wi-Fi and WLANs

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Post Views: 4,903 Below is a clean, technician-focused list of the Windows PowerShell commands used for Wi-Fi and WLAN troubleshooting, organized by function. This aligns well with broadband-tech workflows, capture analysis, and WLAN Operations fundamentals. 1. Let’s Start with Discovering Wi-Fi Interfaces & Drivers Get Wi-Fi NICs & Driver Info Driver Version / Capabilities 2.

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PowerShell Commands Used for Network Troubleshooting

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Post Views: 5,801 Here’s a solid toolbox of Windows PowerShell commands used for network troubleshooting, with quick notes on what each one is good for. I’ll try to group them by task so they are a little easier to remember. 1. Basic Connectivity & “Ping-Style” Tests Test-Connection PowerShell’s ping (ICMP echo) equivalent. Test-NetConnection More advanced

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The TLS 1.2 Protocol Ladder

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Post Views: 1,503 I provide this information for reference when examining TLS in Wireshark. The TLS 1.2 protocol ladder (also called the TLS handshake ladder) describes the step-by-step sequence of message exchanges between a client and server as they negotiate a secure, encrypted connection. Think of it as a “ladder” where each side alternates rungs

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What is the Adapter for loopback traffic capture in Wireshark?

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Post Views: 4,850 Using a loopback adapter (also called a local loopback interface) for packet capture in Wireshark allows you to capture traffic that stays within your own computer — for example, packets exchanged between local applications via localhost or 127.0.0.1. Normally, this traffic never reaches a physical network interface, so a loopback capture is

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Ethernet Taps to Capture Network Traffic

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Post Views: 2,459 Many technicians and network engineering staff, as well as IT staff, often need to “tap” into the Ethernet to capture and troubleshoot network traffic. A full-duplex tap (also called a network tap) is a hardware device placed inline on an Ethernet link that allows network engineers to capture all traffic traveling in

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