CellStream Blog

blog 2215254 640Welcome to the CellStream Blog.  We welcome comments at the bottom of each blog.

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The World’s (Generally) Most Important RFC’s of the Internet

    Got to thinking the other day.  What are the world’s most important RFC’s (Request for Comment specifications)? I decided to make a list. While the following are not in any order, I tried to base them (mostly) on date.  While TCP came first, I still put the Internet Protocol on the top of …

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2021 10 05 9 03 01

What will be the truth regarding the Facebook Outage of 10/4/21?

It is the morning after.  Approximately 24 hours ago, Facebook, WhatsApp, Instagram, and more, went down.  Why?  How?  From the early indications of what is being said, I don’t think the general public will ever be told the whole truth.  This is especially going to be the case if there is a design problem with …

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ZOOM online class at CellStream

Designing Courses for Online Web Based Training

The Coronavirus (SARS-CoV-2) pandemic and the COVID-19 disease has changed our lives: the way we socialize, travel, exercise, work, play, and learn.  Social distancing by working from home and learning from home has become a requirement, not just a lucky or cool thing.  This has resulted in an almost overnight dependency and test of how …

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2020 02 18 11 03 55

CBRS Certified Professional Installer (CPI) Services

CellStream is proud to announce, and congratulates, Mr. Andrew Walding on attaining his CBRS Certified Professional Installer certification from Google!  As discussed in the CBRS overview article, CBRS license holders need an account with one of the SAS providers, and then they need a CPI to actually certify and log their CBSD/Antennas into the SAS …

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2020 02 17 10 18 01

CBRS – the new way to allocate Wireless Spectrum

If you haven’t heard by now, there is a new and innovative way to allocate wireless spectrum.  It is called CBRS – or Citizens Broadband Radio Service.  In our opinion every service provider, rural or otherwise, should be actively engaging this new methodology and ramping yup their awareness and participation in CBRS.  In fact, especially …

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wifisecurity1

Best Practices for Securing your WLAN/Wi-Fi Network at Home or Small Business

If you have attended any of my presentations of WLAN/Wi-Fi Security or even my Security Courses,you know that the design of WLAN/Wi-Fi networks leaves a lot to be desired when it comes to security.  This is also evidenced by the law suit against Amazon with hackers allegedly controlling Ring cameras.   I have always said that …

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2019 09 17 7 44 32

Fantastic New Free Wi-Fi Analyzer for Windows – WinFi Lite

    Recently released at the Microsoft Store is a new free Wi-Fi Analyzer called WinFi Lite by Helge Magnus Keck (@HelgeKeck on Twitter) – look here: https://www.cellstream.com/reference-reading/cellstream-blog/430-winfilite.  [Update – no longer available at the Windows Store – here is the download link: https://www.helge-keck.com/  – click on the download button top right] After test driving this new tool, I can …

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Time for Tier 3 Service Provider Technical Teams to Adopt Linux

In a recent video call with a service provider technical lead, it seemed that every question I answered, whether it was about Wi-Fi or network testing/analysis or troubleshooting, I kept referring to, and sharing what I could do on my Linux laptop.  It was not surprising that toward the end of the conversation, I was …

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Screen Shot 2017 11 14 at 5.22.06 PM

Complaint: Why Don’t You Allow Employees to use 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     Let me begin with a little background.  At CellStream, and the Online School of Network Sciences, we have taught hundreds of Wireshark classes for general networking, voice networking, …

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