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This blog article is a culmination of my years of experience in the networking and computing worlds. Over those years, where I began as a bench and field technician, I have had a number of classes that my employers sent me to to teach troubleshooting skills. Usually termed with the words “logical troubleshooting” or something …
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 …
The World’s (Generally) Most Important RFC’s of the Internet Read More »
From a news channel this evening: “The FBI and CISA are aware of the incident this morning involving fake emails from an @ic.fbi.gov email account,” the FBI said in a statement. “This is an ongoing situation and we are not able to provide any additional information at this time. The impacted hardware was taken offline …
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 …
What will be the truth regarding the Facebook Outage of 10/4/21? Read More »
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 …
Back around the turn of the century (Y2K), I had a small, developing training and consulting company on my hands – CellStream, Inc. founded in 1998 – and we were all about the Internet and Internet based everything. So we promoted Internet based business solutions and learning. We were early adopters of cloud based Intranet …
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 …
CBRS Certified Professional Installer (CPI) Services Read More »
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 …
CBRS – the new way to allocate Wireless Spectrum Read More »
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 …
Best Practices for Securing your WLAN/Wi-Fi Network at Home or Small Business Read More »
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 …
Fantastic New Free Wi-Fi Analyzer for Windows – WinFi Lite Read More »
It used to be pretty simple to adopt and learn the necessary knowledge and skills for a career in the field of Networking (we call it Network Science). It usually involved a non-university certification program (Cisco or Juniper or someone else), a bunch of money, and a bunch of time dedicated to the craft. In some …
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 …
Time for Tier 3 Service Provider Technical Teams to Adopt Linux Read More »
The term “Support” can be used as a noun or a verb. To the right is the definition we found on Google. The one I am referring to is a verb and #2…particularly give assistance to, and enable to function or act. In today’s internet so much support is provided by phone, by email, or …
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, …
Complaint: Why Don’t You Allow Employees to use Wireshark? Read More »
In a recent set of email exchanges with a client, we were tackling the challenges of hiring engineers and technical staff. I can summarize the most interesting issues as follows: How do you deal with the “I want to be involved in a cutting edge, startup environment?” What constitutes valid experience? How do you ensure …
