CellStream FAQs

From the list below choose one of our FAQs topics, then select an FAQ to read. If you have a question which is not in this section, please contact us.

This information is PUBLIC.

Where can I find information on writing secure code?

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 »

What commands can you run from the Windows Start> Run> CMD?

On April 18th 2018 Microsoft published (for the first time ever?) a complete command line reference.  It is a 248 page PDF document.  You can download it here. 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

What commands can you run from the Windows Start> Run> CMD? Read More »

What are the wireless speeds for 802.11n 802.11ac and 802.11ad?

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 »

Should everything be “Virtualized”?

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 »

Neighbor Discovery (ND) Table in IPv6 Windows, Linux and MAC Machines

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 »

How do you Remote Desktop from Windows to Ubuntu?

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 »

mainmenu

How do I get Linux/Ubuntu to show interfaces in Wireshark?

Ah – a common problem.  Wireshark has installed and does not see any of the computer interfaces so you can do captures. The answer to your problem is simple!  You need to give the Wireshark application root priviledges. Ubuntu Solution In Ubuntu, the best way to fix this (and any other application that needs root

How do I get Linux/Ubuntu to show interfaces in Wireshark? Read More »

Could I be breaking the law if I connect to an unsecured wireless network?

The answer is – possibly – yes, unless you have explicit permission to access the network (such as a free WiFi hotspot at the airport or town square). Many states have criminal laws that prohibit accessing any computer or network without the owner’s permission. For example, in Texas, the statute is Penal Code section 33.02,

Could I be breaking the law if I connect to an unsecured wireless network? Read More »

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