Frequently Asked Questions

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Have a question about networking or computing?  Hopefully you can find an answer here!

Frequently asked questions about the CellStream consulting and training services are answered here as well as number of other topics.  If you would like to ask us a question, it is easy to contact us.

We hope you find the content here useful.

What maintenance should I run on my computer, if any?

Maintaining the system is always a good idea, and it should be habitual. We break maintenance into three types: a) continual, b) periodic, and c) occasional. We recommend you get into a routine by inserting to-do’s or calendar reminders to run maintenance until you do it automatically. So let’s look at a good maintenance plan:

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Do VPN applications really protect your traffic, and if so, what exactly are they doing to my packets?

Yes, VPN applications do protect your traffic. A VPN is like wearing a costume or a mask because it masks your real identity and location, just like a costume or mask hides who you are in real life. Here’s the breakdown of the analogy: VPN vs. Costume Analogy VPN Function Costume Equivalent Hides your IP

Do VPN applications really protect your traffic, and if so, what exactly are they doing to my packets? Read More »

A Simple Capture and Filter Exercise for Wireshark

Someone asked the following “getting started” question on the Wireshark Discord site, and it prompted me to write this FAQ to help newcomers to Wireshark understand how to navigate the initial complexity of packet capture. Hi everyone! I’m new here and just downloaded wireshark for a Computer Comm class. I need to capture traffic sent

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What ever happened to ATM (Asynchronous Transfer Mode)?

Asynchronous Transfer Mode (ATM) was once seen as a promising Layer 2 networking technology due to its ability to handle a variety of traffic types (voice, video, and data) with high efficiency and quality of service (QoS) performance guarantees. I spent several years working with and then teaching ATM courses to my fellow telecom engineers. 

What ever happened to ATM (Asynchronous Transfer Mode)? Read More »

How do I get Windows interfaces to show up in Wireshark?

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 Apparently this is a common problem, where on Windows systems you do not see any interfaces: There are a couple of things to try: 1. If you are using the

How do I get Windows interfaces to show up in Wireshark? Read More »

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