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: 2,339 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 I am often asked how SSL and TLS can be decrypted in Wireshark captures. I have written a separate article on HTTPS Decryption in Wireshark here. NOTE: […]
Leveraging SSL and TLS Decryption in Wireshark Read More »
Post Views: 8,128 Hi everyone! Being able to decrypt the encrypted contents of packet captures is very important if you want to troubleshoot anything above Layer 4. This is even more important today as the network is evolving to QUIC where everything is encrypted. Check out these great references as well: Our custom profiles repository
TLS Decryption in Wireshark Using Key Log Files in Windows, MAC, and Linux Read More »
Post Views: 33,509 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 If you are a Wireshark power user, you know the importance of complex display filters to narrow searches for very particular items. The challenge can be to
Zero to Hero with Wireshark Display Filter Macros Read More »
Post Views: 1,870 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 For those of you who love Wireshark and are asking the question: How do I find what HTTPS site were visited within a capture? I have a
Finding HTTPS Sessions in Wireshark Captures Read More »
Post Views: 2,867 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 Great question, and one I get all the time. As most of you know, the manufacturer of a networking device that uses MAC addressing can be
How do I find all packets from Apple devices in Wireshark? Read More »
Post Views: 1,662 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 It’s Sunday, it’s Father’s Day, and it is the day before Sharkfest 2017! One of the best presents has been that TRANSUM has been included as a
The TRANSUM tool is now in Wireshark 2.4! Read More »
Post Views: 1,440 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 One of the clever Wireshark 2.x features has to do with Wireless packet trace analysis. From the Wireless menu drop down, there is a WLAN Traffic item.
Wireless Report in Wireshark 2.x Read More »
Post Views: 7,892 Check out these great references as well: Our Wireless custom profile for Wireshark Our Udemy course on Wireless Packet capture Our other Wi-Fi related articles At a recent course I taught in New England, one of the students wanted to capture Wi-Fi packets on their Windows Surface Pro. Of course, I referred
Capturing Wi-Fi WLAN Packets in Wireshark on Linux Read More »
Post Views: 7,418 Check out these great references as well: Our Wireless custom profile for Wireshark Our Udemy course on Wireless Packet capture Our other Wi-Fi related articles As many of my clients and students know, I have always been astonished at how hard it is to capture the Wi-Fi traffic in Windows. This article
Capturing Wi-Fi WLAN Packets on Windows for Free! Read More »
Post Views: 2,866 A frequent visitor here will know that we have many articles discussing the netsh command line shell/scripting tool in Windows. The tool was originally introduced in Win2K. If you aren’t a regular – just click on ‘netsh’ in the tag cloud to see them all. This article discusses how you can use
Using Netsh to Capture Packets in Windows Read More »
Post Views: 8,523 Monitoring, analyzing, managing, and diagraming a network can often be a huge problem for Network and System Administrators. They are often vendor specific or cost large sums of money to license. We also have the challenge of so many different network infrastructures, like Wi-Fi and wired. If you are looking for a
A List of Network Monitoring Tools for Network and System Administrators Read More »
Post Views: 4,547 One of the utilities that is included in your Wireshark distribution is a command line tool called ‘mergecap’. We use this tool to merge multiple captures generated, let’s say, from a ring buffer capture (you can see how to do ring buffer captures using tshark here). Alright, so let’s say you have
Using the mergecap Tool to Merge Packet Captures Read More »
Post Views: 6,357 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 As most folks who use Wireshark know, Wireshark comes with a collection of command line or terminal based utilities. Here is a view of those utilities (I
Wireshark Ring Buffer Capture from the Command Line using tshark Read More »
Post Views: 1,916 Here is a simple tip for Windows users. Do you have applications that you need to start all the time, but it is a pain to locate them in the Start Menu? I have the answer. This has been around for years, but I am always surprised by how helpful this is
A Quick Start for your Favorite Windows Apps Read More »
Post Views: 2,223 Let’s say you deal with HUGE packet captures and you need to parse or carve out certain types of packets or conversations from the source. This is particularly true for folks that use Ring Buffers, or folks who do huge captures over long time period with fast interfaces. If you do this
Carving and Parsing Packet Captures Read More »
