Category: Networking & Virtualization

Many people are frustrated by their Wi-Fi networks. Among other things, there is interference, reflections, attenuation (signal loss) because of walls, long distances or whatever, and the hassle of managing all that. We have to remember one critical thing about Wi-Fi: it’s radio so it is heavily regulated. The power the devices and access points […]

A friend needed to move her website from one hosting provider to another. The problem was that she used a website builder on the first provider so she didn’t have the content on her computer; she recoiled at the thought of re-entering it. wget to the rescue! GNU Wget is a tool that can download […]

I recently wrote about the use of fiber optic cable for physical intrusion detection. In that post, I mentioned single- and multi-mode fiber. Here, I’d like to discuss the two types in more detail. This is a bit of a technical overview, so if you are looking for deep details or a non-technical explanation, this […]

Are you studying for a cybersecurity certification exam? Some people struggle because they expect the wrong things. So, here’s what you need to know. ACIC — I Also Get To Learn Learning Tree courses include a great added benefit. It’s the After-Course Instructor Coaching session. When I teach a Linux server course, I tell people […]

Security of wireless networks has always been essential. This January the Wi-Fi Alliance® announced a new version of its Wi-Fi Protected Access® or WPA designed to improve the security of 802.11 wireless networks. The four improvements directly address authentication and confidentiality of the networks. Since most of us have Wi-Fi networks in our homes, offices, […]