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.
The links to the products shown here are all available through Amazon, and if you use these links, we will get a small cut through our Amazon Associates program. We thank you for doing this. I often get asked for a list of products that are in my “go bag”, when I work on networks. […]
The Network Products We Use in Our “Go Bag” Read More »
We get this question often: I am new to Telecom, or I just started at a service provider, and I need to learn Telecom basics – how can I come up to speed? This is a GREAT question – and the truth is: you need to get up to speed. The more you understand the
New to Telecom. How can I come up to speed? Read More »
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
A Simple Capture and Filter Exercise for Wireshark Read More »
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 »
Network Address Translation (NAT) and Network Port Address Translation (NPAT) are not considered a security function because its primary purpose is to modify the L3 network address information in IPv4 packet headers and L4 port numbers of TCP or UDP while in transit. NAT and NPAT are not needed in IPv6 networking. NAT is primarily
Why are NAT/NPAT not a security function? Read More »
I am getting asked a lot about this. Below is mix of reporting and my take on what happened and what needs to be done. Just so we are clear: I have no secret inside knowledge or insight into the problems. But if you are looking for a clear explanation, read on. The recent CrowdStrike
What was the nature of the July 2024 CrowdStrike computer outages? 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 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 »
Great question and thanks for letting us advertise our services! We provide a number of consulting services, they include: Technology implementation analysis Business case development Competitive analysis Requirements/architecture definition Network design and support Wi-Fi Network Analysis RFP creation and response support Sales force training/enlightenment Solutions brainstorming White paper and collateral creation/review, and much more. Click
What consulting services does CellStream Provide? Read More »
TO: All Clients and Potential Clients FROM: Andrew Walding President & Founder CellStream Inc. — www.cellstream.com 9812 Zembriski Drive, Plano, TX 75025 866-659-1014 RE: Our Anti-Virus Policy LAST UPDATED: 01/04/2011 We make every effort to ensure files sent to our clients via e-mail, Internet, or disk
Do you have a Virus Protection Policy? Read More »
CellStream, Inc. Corporate Social Responsibility Statement/Policy CellStream, Inc. (CSI) is keenly aware that the way we do business has an impact on the world, both social and environmental. Our corporate goal is to engage in social and environmental activities that maximize the positive impacts we can have, while minimizing any negative impacts. Minimizing Environmental Impact
Do you have a Corporate Social Responsibility Statement and/or Policy? Read More »
CellStream, Inc. CODE OF ETHICS Clients We will serve our clients with integrity, competence, and objectivity. We will keep client information and records of client engagements confidential and will use proprietary client information only with the client’s permission. We will not take advantage of confidential client information for our firms or ourselves. We will
Do you have a Code of Ethics at CellStream? Read More »
CellStream, Inc. Corporate Security Statement/Policy PURPOSE CellStream, Inc. is committed to meeting the Security requirements of the Telecommunications Industry to insure security of our customer information, our students, and our co-workers. To that end, we have adopted the following security policies. OUR EMPLOYEES This policy applies to all employees of CellStream, Inc. (CSI) and
Do you have a Corporate Security Policy? Read More »
A great question in my two day Security class recently. The physical layer (Layer 1) of the layered model is responsible for the transmission of raw data bits over a communication medium. Although it is often considered more secure due to its reliance on physical components, it is still vulnerable to a variety of threats.
What are some examples of Physical Layer Threats in Networking? Read More »
