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: 1,284 If you are a Mac user, you have probably assumed that Preview (the MacOS PDF viewer) is just a viewer and can do little else. If so, you would be wrong. While there are a number of things Preview can do, one of the most important is that it can save PDF […]
Using MacOS Preview to save PDF’s in Different Sizes Read More »
Post Views: 5,125 What exactly is the purpose of the IP ID field? This is actually a great question. While many have tried to answer the question in various articles on the Internet, I thought the question deserved a clear answer to the question. RFC 6864 updated RFC’s 791, 1122, and 2003 to clarify the
The Purpose of the IP ID Field Demystified Read More »
Post Views: 1,278 For those of you who run GNS3 and/or Virtual Box or VMware and would like to have a free legitimate Windows image, Microsoft Internet Explorer team has provided an answer! Did I mention it is free? Don’t believe me? Go here and look. You can download different versions of Windows with different
Free Windows Virtual Machines from Microsoft Read More »
Post Views: 1,511 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 A common question I get is how can I set up a custom local name resolution file for IP and MAC addresses in Wireshark. We discussed basic
Setting up Custom Wireshark Name Resolution Files Read More »
Post Views: 1,353 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 When using Wireshark, on some computers, the number of interfaces present due to things like virtualization and other configurations can be overwhelming. Some times, like when we
Controlling Displayed Network Interfaces in Wireshark Read More »
Post Views: 2,389 Hi Everyone! If you support MPLS operations in your network, then you need to have an MPLS profile for Wireshark. In this case, we have an LDP profile for you to use. This is great for fundamental MPLS operations involving LDP. As with any Profile for Wireshark, to add this profile, within
Basic MPLS LDP Profile for Wireshark Read More »
Post Views: 1,193 Some of you know, that to master networking technologies you have to have a complete grasp of the fundamentals. Furthermore, like any technology, if you don’t review these fundamentals often, they can become a bit hazy in our memory. The question, then, is how can I come up to speed on the
Learning the Network Science Fundamentals Read More »
Post Views: 1,420 We thought it would be useful to our networking colleagues to provide an overview of the OpenFlow protocol. Let’s begin with a broad definition of what OpenFlow is. OpenFlow is a communications protocol that uses network-centric, network-aware intelligence in it’s communication design. OpenFlow works on Software Defined Network (SDN) controllers
Post Views: 24,100 For those of you who love Wireshark and are supporting Wi-Fi Wireless networks, we would like to offer a great default profile for WiFi. Let’s make no bones about this capturing and analyzing Wi-Fi traffic is not as easy (you have to be in Monitor Mode) as just selecting this profile
A Wireshark Wi-Fi WLAN Troubleshooting Configuration Profile Read More »
Post Views: 2,155 Most users of Wireshark and T-Shark are completely unaware that neither of these programs alone actually captures packets! So wireshark people (and others), let’s dig in. 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 Both
How To Use ‘dumpcap’ Natively on your Computer Read More »
Post Views: 6,622 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 For those of you who love Wireshark and are supporting IPv6, we would like to offer a great default profile for IPv6. Consider for a moment what
A Wireshark IPv6 Configuration Profile Read More »
Post Views: 4,804 For those of you who love Wireshark and are supporting BGP, we would like to offer a great default profile for basic BGP. Consider for a moment what would be important in your network administration in basic BGP: All this would be a great starting point. Profiles are one of the most
A Wireshark Basic BGP Configuration Profile Read More »
Post Views: 2,525 Most network engineers and technicians are quickly discovering that with “everything over IP” we are required to understand exactly what this means. For a lot of the standard, traditional data communications between clients and servers this means transport over TCP. Furthermore, it requires the ability to troubleshoot TCP. To troubleshoot
A Wireshark TCP Troubleshooting Configuration Profile Read More »
Post Views: 6,112 For those of you who love Wireshark and are supporting IPv4, we would like to offer a great default profile for IPv4. Profiles are one of the most important Wireshark capabilities. Setting up and using different profiles for different environments, protocols, and tasks is a crucial skill that we teach in our
A Wireshark IPv4 Configuration Profile Read More »
Post Views: 6,388 For those of you who love Wireshark and are needing to analyze DNS Queries and Responses, we have the profile for you. Profiles are one of the most important Wireshark capabilities. Setting up and using different profiles for different environments, protocols, and tasks is a crucial skill that we teach in our
A Wireshark DNS Configuration Profile Read More »
