Welcome to our vibrant hub for all things networking and computing! At CellStream, we believe in empowering you with the knowledge to master your digital world. Whether you’re a beginner looking for foundational advice or a tech-savvy enthusiast seeking advanced techniques, our Computing Tips section is your go-to destination.
If there is something you need help on or something you would like to see added here, just drop us a line at our Discord server and we will be glad to try and help.
Be careful, not all tips work on all networking equipment nor operating systems.
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 to so many […]
A Quick Start for your Favorite Windows Apps Read More »
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 you start to
Carving and Parsing Packet Captures Read More »
If you deal with enormous capture files, speeding up your work process is crucial. Watch this video for a demonstration and example of how you can solve this issue: What I have below is a minimized dissector profile you can use. This is a minimized dissector profile that will reduce Wireshark crashes, speed your carving/parsing
A Minimized Dissector Configuration Profile for Wireshark Read More »
So often we use Linux as a virtual machine or even as a test or capture system. If you are a little rusty on Linux, or brand new to it, there is a lot to learn. This article is like a mini starter course on Linux. I have built this mini course by condensing some
Getting Started with Linux – A Beginners Linux Mini-Course Read More »
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 files in different
Using MacOS Preview to save PDF’s in Different Sizes Read More »
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 definition of the
The Purpose of the IP ID Field Demystified Read More »
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 versions of Internet
Free Windows Virtual Machines from Microsoft Read More »
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 name resolution in
Setting up Custom Wireshark Name Resolution Files Read More »
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 are using Wireless
Controlling Displayed Network Interfaces in Wireshark Read More »
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 Wireshark, click on
Basic MPLS LDP Profile for Wireshark Read More »
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 fundamentals? And, how
Learning the Network Science Fundamentals Read More »
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 placed in the
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 and clicking capture.
A Wireshark Wi-Fi WLAN Troubleshooting Configuration Profile Read More »
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 programs use a
How To Use ‘dumpcap’ Natively on your Computer Read More »
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 would be important
A Wireshark IPv6 Configuration Profile Read More »