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: 12,720 Welcome to my little nmap cheat sheet! To learn more about nmap – check out my articles: Getting Started with nmap and Deeper Scanning with nmap and Even Deeper Scanning with nmap and Advanced nmap Scripting Engine. There was no intent here to recreate the full nmap capabilities, that would have been a waste
A Little nmap Cheat Sheet Read More »
Post Views: 3,094 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 more and more of you are moving to Voice over IP, you will want to use Wireshark to do voice analysis. But first, you may want
Using tshark for Packet Voice Read More »
Post Views: 12,290 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 many of you know, tshark is the command-line version of Wireshark, designed for packet capture and deep protocol analysis without a graphical interface. It uses the
tshark Usage Examples Read More »
Post Views: 5,188 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 Using Wireshark Coloring Rules – Some Notes A great site with additional coloring rules offered to the community: http://wiki.wireshark.org/ColoringRules All default coloring rules are stored in a
Using Coloring Rules in Wireshark Read More »
Post Views: 3,195 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 the Wireshark host performs TCP and UDP checksum offloading – the process of calculating the checksum on the NIC and not by the protocol stack –
Removing Checksum Calculations in Wireshark Read More »
Post Views: 1,776 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 We all know what a great tool Wireshark is. One of the features added to Wireshark is the ability to temporarily colorize an Ethernet, IP,
Using Wireshark Temporary Colors to easily see a Conversation Read More »
Post Views: 2,427 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 Here is another Wireshark (TM) usage tip! Normally, and by default, Wireshark captures packets and displays IP addresses of the devices that are sources and destinations: During
Basic Wireshark Layer 3 Name Resolution Read More »
Post Views: 2,066 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 Calling all Wireshark Users! Feel free to download our Wireshark Display Filter Cheat Sheet right here! This cheat sheet organizes the display filters by Layer of the
Wireshark Display Filter Cheat Sheet Read More »
Post Views: 1,876 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 cool things you can do with Wireshark is capture packets on remote servers or systems. This is particularly handy for those who
Using Wireshark to Capture on Remote Servers or Systems Read More »
Post Views: 3,318 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 Wireshark is a great graphical tool for performing packet analysis and we all agree that the GUI is wonderful, especially the new 2.x interface and later. But,
How to use tshark – a starting point Read More »
Post Views: 1,358 One of the most popular routers on the planet is the Linksys WRT54G series. We are also happy owners of this platform (version 2 to be exact). Unfortunately, Cisco (as well as many other router vendors and their platforms) decided to stop offering support for this router through software upgrades. This purposes
Upgrade Your Router/Gateway – Even If The Manufacturer Won’t Read More »
Post Views: 5,261 What is Netsh? Netsh is a Microsoft Windows command-line shell/scripting utility originally introduced in Windows 2000 that allows you to, either locally or remotely, display or modify the network configuration of a computer that is currently running. Netsh also provides a scripting feature that allows you to run a group of commands
The Netsh Shell/Scripting Tool in Windows Read More »
Post Views: 1,458 If you are a packet capture specialist, you have probably played with TCPdump for troubleshooting networks. We have created a TCPdump cheat sheet to help. You can download it here! If you are looking for a more comprehensive reference for TCPdump – you will find that in our Patreon community here. Let
The CellStream TCPdump Cheat Sheet now available Read More »
Post Views: 1,969 If you are a packet capture specialist or network troubleshooter, you have probably learned that ICMP is very important to the operation of any TCP/IP network. We have created an ICMP cheat sheet to help. You can download it here! If you would like to help support the continued development of independent
The CellStream ICMP Cheat Sheet Read More »
Post Views: 1,953 Check out our IPv4 Cheat Sheet! All the important IPv4 References in one place. This is vital to anyone learning IPv4. You can see our IPv4 Subnetting video here: https://youtu.be/VQ4-rVY8iEM You can view our other videos on our YouTube channel: https://www.youtube.com/channel/UCO2p6v9ooIR0OHnCI2oTGng We have created an IPv4 cheat sheet to help. You can download it
The CellStream IPv4 Cheat Sheet Read More »
