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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.
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This is a great question. The latest list (when this was written) is: Arp – Displays and modifies entries in the Address Resolution Protocol (ARP) cache, which contains one or more tables that are used to store IP addresses and their resolved Ethernet or Token Ring physical addresses. There is a separate table for each Ethernet […]
What are some network related command line tools within Windows? Read More »
In short, things are advancing quickly. Readers may also be interested in watching the Senate hearing on the subject. http://commerce.senate.gov/public/index.cfm?p=Hearings&ContentRecord_id=fc757765-b147-4f14-9e01-754721a5cffd&ContentType_id=14f995b9-dfa5-407a-9d35-56cc7152a7ed&Group_id=b06c39af-e033-4cba-9221-de668ca1978a Further, I offer the following: Dear OPASTCO Member, Last week, the Federal Communications Commission (FCC) delivered its first Notice of Inquiry (NOI) and Notice of Proposed Rulemaking (NPRM) on the recommendations concerning the high-cost
Where we are in the USF? Read More »
This procedure has moved from our Online School and is now described in an article at this site. We actually have several articles! Here is the original article: click here. Here is an article on securing Wi-Fi in your home or small business: Click here to browse the article! I hope you find this article
Where can I find the information on securing a home network? Read More »
Yes. This is a great idea and you can find details right here.
Where can I find the article/information on re-use of old computers? Read More »
Great question received just before the holidays. The security of software is paramount, especially in any communications systems (routers, switches, servers). We are all fimiliar with “patch Tuesdays” as efforts to thwart security holes in software are a constant. Surprisingly, few Computer Science majors include skills on secure coding. Furthermore, policies and procedures to ensure
Where can I find information on writing secure code? Read More »
Check out these additional IPv6 Resources: Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School Hi, and sorry for the delay in responding! This is a broad question, and I hesitated to respond when it was first asked more than 10 years ago. My mind
What is the status of IPv6? (updated for May 2025) Read More »
Part of the answer is in your question: it is a protocol, and it stands for Locator/ID Separation Protocol. The use of LISP is targeted at deployment of virtual systems, and the movement/management of those systems/resources (such as Virtual Machines) across networks to other places such as other data centers. LISP really answers the question
What is the LISP protocol? Read More »
It is not possible to give a one sentence answer to this great question. But I will answer it and provide a great video to watch that explain the implications of it – take a deep breath: In a nut shell, Software Defined Networking, or SDN, is a network manager defined and network manager controlled
What is Software Defined Networking? Read More »
Great questions! I think the best way to answer the question is to describe what each one is. I will start with Cisco ONE. Cisco ONE ONE stands for “Open Network Environment”. The idea is to allow programmability of the network and the network elements. This allows for consistency across both physical and virtual network
What is Cisco ONE and Cisco OnePK? Read More »
Here is my quick list of commands you can run from the Windows Command Line: (START> RUN> CMD) ADDUSERS Add or list users to/from a CSV file ARP Address Resolution Protocol ASSOC Change file extension associations ASSOCIAT One step file association AT Schedule a command to run at a later time ATTRIB Change file attributes
What commands can you run from the Windows Start> Run> CMD? Read More »
This is a very common question. First, we must warn of the difference between theoretical speed and actual speed. You have probably heard this a million times, but there are so many factors that can affect wireless throughput. I won’t go into them here so I can stay on the subject. 802.11n is a three-spatial-stream
What are the wireless speeds for 802.11n 802.11ac and 802.11ad? Read More »
We have met many people who are considering virtualization of servers in a number of different scenarios. Some of these folks are just getting started with virtualization, which can be a big change in light of shrinking budgets and limited supporting infrastructure such as shared storage. Some folks have already done some virtualization and are
Should everything be “Virtualized”? Read More »
Check out these additional IPv6 Resources: Our IPv6 overview course at Udemy Our IPv6 Custom Profiles for Wireshark Our IPv6 classes at the Online School A great question I was asked in class was: “If Neighbor Discovery processes have replaced ARP in ICMPv6, how do you look at the equivalent of the ARP cache?” Great
Neighbor Discovery (ND) Table in IPv6 Windows, Linux and MAC Machines Read More »
This is a common question I get asked at many of my classes. Staying on top of technical news and the Internet is sometimes a challenge The short answer is that I really can’t keep track of it all – I don’t think anyone can. But here is how I track what I can: First
How do you stay on top of technical news and the Internet? Read More »
This is a great question. First, you have probably learned that you can use Ubuntu’s APPLICATIONS > INTERNET> TERMINAL SERVER CLIENT program to remote desktop to Windows machines. Going the other way is a bit more challenging. You need to have two things in place: 1. You must enable remote desktop connections in Ubuntu. You
How do you Remote Desktop from Windows to Ubuntu? Read More »