Welcome to CellStream’s Networking and Computing Tips resource center, where technology professionals, students, and enthusiasts can find practical guidance, troubleshooting techniques, and real-world solutions for today’s networking and computing challenges. Our goal is to help you work smarter, solve problems faster, and build a stronger foundation of technical knowledge.
Whether you’re configuring a network, optimizing system performance, learning a new technology, or troubleshooting a difficult issue, you’ll find valuable insights drawn from decades of industry experience. From Wireshark packet analysis and broadband technologies to Windows, Linux, cybersecurity, Wi-Fi, and Internet protocols, our tips are designed to be practical, actionable, and immediately useful.
• Step-by-step technical guides and how-to articles
• Networking troubleshooting techniques and best practices
• Wireshark tips, packet analysis workflows, and protocol insights
• Windows, Linux, and computing optimization recommendations
• Cybersecurity awareness and protection strategies
• Broadband, Wi-Fi, Ethernet, TCP/IP, and Internet technology guidance
• Productivity tips and tools for network engineers and IT professionals
• Improving network troubleshooting efficiency
• Optimizing computer and operating system performance
• Securing devices, accounts, and data
• Capturing and analyzing packets with Wireshark
• Understanding TCP/IP, DNS, DHCP, Ethernet, and Wi-Fi technologies
• Using industry tools more effectively
We’re always looking for new ideas, questions, and topics to explore. If there’s a networking or computing subject you’d like us to cover, or if you need help solving a technical challenge, connect with us through our Discord community or contact us directly.
Please note that not all tips, procedures, and configuration examples apply to every operating system, network device, software version, or vendor platform. Always verify compatibility and test changes in a controlled environment before implementing them in production networks.
Post Views: 54 Open Shortest Path First, or OSPF, is a dynamic routing protocol used by routers to exchange information about available IPv4 and IPv6 networks. It is classified as a link-state Interior Gateway Protocol, meaning it is designed to operate within a single organization or autonomous system. OSPF allows routers to automatically learn the […]
OSPF Specifications – A Complete Library Read More »
Post Views: 2,148 Hi everyone! As many of you who have attended my conference presentations and Wi-Fi classes know, I spend time talking about the correct way of troubleshooting Wi-Fi networks. **********JUST UPDATED************* Power cycling or rebooting is NOT a first step. Here’s why: lets say you are having issues of some kind (slow speed,
Our Comprehensive Wi-Fi Troubleshooting Guide Read More »
Post Views: 336 Do not troubleshoot Wireshark captures by chasing random red and black packets. Start with triage, classify the traffic, branch into the correct protocol workflow, and then prove the finding with packet evidence. The following is a shortened version of our structured “Triage → Classify → Branch → Prove” Wireshark troubleshooting workflow built
Wireshark Troubleshooting Workflow Read More »
Post Views: 26,938 Windows Firewall allows you to control the traffic entering and leaving your system through various rules. You can create and configure firewall rules to permit or block specific network activities. If you are looking for a more complete curated and advanced set of examples – join our Patreon community and check out
Configuring Windows Firewall Rules using netsh Read More »
Post Views: 2,052 If you have upgraded Wireshark to the latest version 4.6.5 and later, you will note a big change to the “welcome” screen, or home screen of Wireshark. It now looks like this: The two “boxes” on the right are new and bold. The tips and tricks is great for new Wireshark users,
A New Wireshark Welcome Screen Read More »
Post Views: 669 Let’s say you are a CO Tech/Engineer or an enterprise network engineer that works with Voice over IP (VoIP). Let’s further say that there are issues with one or more users so you have done a bunch of packet captures, perhaps even used Wireshark’s Ring Buffer capability, and now you want to
Extracting VoIP Packets from Multiple Captures Read More »
Post Views: 1,179 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
How to Set a WLAN Frequency or Channel in Linux for Wireshark Packet Capture Read More »
Post Views: 5,554 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
Apply Master to ALL Notes Pages in MS PowerPoint Read More »
Post Views: 660 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? To read more
Net Neutrality at the Packet Level Read More »
Post Views: 637 The following is a step by step lab exercise to examine ABR – Adaptive Bit Rate used in modern video content delivery. I won’t explain ABR here – you can read about ABR and what it is, and how it works here in a recent post. We will analyze a synthetic but
A Synthetic ABR Lab Exercise Read More »
Post Views: 1,135 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
Combining Wireshark Ring Buffers with Capture Filters for Performance Read More »
Post Views: 3,101 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
Wireshark Ring Buffer Capture Feature Read More »
Post Views: 3,206 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
IPv6 Linux Command Line Examples Read More »
Post Views: 1,970 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,
Fiber Optics Primer for Technicians Read More »
Post Views: 9,413 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. You will find a more comprehensive and updated version of this post at our Patreon community. You will find the complete
Windows PowerShell Commands for Wi-Fi and WLANs Read More »
