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: 1,484 In this article we will show you how to secure your home network in a great way using IP Addressing. By making some simple changes to the way you address the home or small business network, you can easily provide visitors with Internet access, without exposing your own computers, appliances and servers […]
Securing a Home or Small Business Network Read More »
Post Views: 1,465 The following lab exercise is how to create an IPsec VPN on Cisco IOS. We originally created this lab as part of one of our courses, and we hope you find it useful. Lab Preparation This lab is designed to help you learn the basics of IPSec VPN’s and how Service Providers
An IPsec VPN Lab Exercise Read More »
Post Views: 5,679 The netstat (short for network statistics) command is a powerful diagnostic tool used to display various network-related information on a computer. It’s available on Windows, Linux, and macOS systems (though on newer systems it is sometimes replaced or supplemented by ss in Linux or Get-NetTCPConnection in Powershell). netstat helps you: Some useful
What is the ‘netstat’ command, and what can it do? Read More »
Post Views: 9,353 Let’s answer the questions, but before I do, you can watch my ARP lesson on Youtube here: https://youtu.be/aD_caJxD7nY and look at the lessons in the playlist:https://www.youtube.com/playlist?list=PL-nDeWT9WTjFT1syEIGsLTObjkx4XDOUt Check out some further ARP Resources: Our free ARP course at Udemy Our ARP custom profile for Wireshark Our chapter on ARP at the Online School Reference
What is the ‘arp’ protocol and the ‘arp’ command, and how can I use it? Read More »
Post Views: 1,061 If you have a web/email server connected to the Internet that you want other to reach, that server must have a public IP address. Most Internet users don’t even try to remember the IP addresses of sites they use, instead they use the Universal Resource Locator system of typing www.cellstream.com or something
Using a Dynamic DNS Service Instead of a Public IP Read More »
Post Views: 1,174 Here are some fundamental PC Troubleshooting Tips. We cant cover everything here, but if something below helps, great! PC Won’t Boot Into Windows Try “Safe Mode” FirstWhen your PC just won’t boot into Windows at all, you’ll probably want to start off with Safe Mode—use the F8 key right when the system
Some Basic Troubleshooting Tips for the PC/Networking Read More »
Post Views: 1,274 Here is a good question: At a recent POTS to Pipes you told us of the story of the customer that was upset with his local telephone company due to his internet being really slow, etc., and you had went through some steps that you could use to verify how many appliances
Determining What is Connected to a Customer LAN or WLAN with ColaSoft MAC Scanner Read More »
Post Views: 1,569 Device drivers: which ones are running on your Windows System?? Here is how you find out: you can find detailed information about specific drivers being used in a Windows system by going to Device Manager, selecting the device from the list, and drilling down to the device’s properties sheet. While this technique
Troubleshooting Device Drivers Read More »
Post Views: 1,135 When you install a device driver on a Windows machine, the operating system loads that driver each time the computer boots regardless of whether the device is present—unless you specifically uninstall the driver. This means that drivers from devices that you have long since removed from your system may be wasting valuable
Removing unused Device Drivers Read More »
Post Views: 994 One of Microsoft’s big selling points for Windows XP was that it loads applications much faster than its predecessors. To accomplish this feat, Windows XP uses what is called the “Prefetch technique,” in which the operating system gathers information about each program that you launch and stores that information in the \Windows\Prefetch
Faster Booting by cleaning out Windows Pre-Fetch Folder Read More »
Post Views: 1,883 If you are new, or if you are experienced in Linux, it is always helpful to have a cheat sheet with all the various commands to help you control networking, process files, and much more. Sometimes a cheat sheet can even show you better ways to do something, or even introduce you
A Linux Command Line Cheat Sheet Read More »
Post Views: 820 Because of the way that search engines crawl sites, many of you have no idea that CellStream has been compiling a bunch of what we call “Cisco Router How To’s”, and these are easily available to any network administrator. What you do is go to this link , you may need to create an
Cisco Router Tech Tips and “How To’s” Read More »
