Telecommunications Consulting Services
Consulting Services from Network Design to Project Management
Check Out our Consulting Services
Internetworking Training Experts
Training and Learning Services focused on the technology that makes the Internet work.
Check Out our Learning Services
Wireshark Experts
Packet analysis expertise is critical in today's networks, and being able to use the best packet analyzer application is a skill we can help you and your team attain.
View Our Wireshark Classes
Are you a Network Scientist?
If you are just getting started in networking or you have been in the industry/technology for years you know there is so much to learn and so much to explore in networking technologies. Explore our vast collection of articles and reading.
Read More
Online Certification Training
Find out about our Network Self Certification Program for Rural Service Providers at the Online School of Network Sciences
Check Out Our Program at our Online School
Previous slide
Next slide

Welcome to our home on the Internet, where we can not only share information, but also interact with each other. If you are a visitor to the site, there are a number of things to view: our FAQ’sNetworking and Computing Tips, our CellStream Blog, and other fun reading can all be found in the drop down menus above.  The Training menu provides access to our coursesour course calendar, and learning services.  The Consulting Menu provides information on our consulting services and a place to meet our consulting and teaching team.  Registered CellStream folks and our clients will log in using their private credentials to access projects, calendars and discussions.

Thanks for visiting! We always welcome comments and suggestions.  You can also join our Discord Server here!

Why are NAT/NPAT not a security function?

Post Views: 182 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.

Read More »

A Simple Capture and Filter Exercise for Wireshark

Post Views: 213 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

Read More »

What ever happened to ATM (Asynchronous Transfer Mode)?

Post Views: 294 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

Read More »

A List of USB Wi-Fi Adapters that support Monitor Mode

Post Views: 11,696 So many folks use Windows and they want to capture Wi-Fi traffic in Monitor Mode using their onboard Wi-Fi adapter, and, for those of us who have tried, we all know how problematic that is. The answer as discussed in my post here is to use an external adapter. So which adapter

Read More »

What is the ‘whois’ command?

Post Views: 828 The whois command is a tool commonly used on various operating systems, including Linux, MacOS, and Windows, to query databases that store the registered users or assignees of an Internet resource, such as a domain name, an IP address block, or an autonomous system. It can provide information such as the domain

Read More »
440px Internet2

View Historical Web Pages with Wayback!

Post Views: 669 Let’s say you wanted to view our site back in 2001.  Could you do it?  The answer is yes! That’s right, someone has been crawling the web called the Wayback Machine ( The Wayback Machine is a digital archive of the World Wide Web and other information on the Internet created by

Read More »

Upcoming CellStream Training Classes and Events

To see the full calendar click on View Calendar below.  WBD = Web Based Delivery

Contact Us Here

Please verify.
Validation complete :)
Validation failed :(
Your contact request has been received. We usually respond within an hour, but please be patient. We will get back to you very soon.
Scroll to Top