SSH X-Forwarding (a more secure alternative to VNC)

X is a popular window system for Unix/Linux workstations (similar to explorer.exe for Windows systems), and one of its best features is its transparency. A great feature about using X is that you can run remote X applications that open their windows on your local display (and vice versa, running local applications on remote displays). Read More …

Segment a LAN into VLANs

VLANs or virtual LANs, are a great tool to segment LANs without having to build a complex and costly network infrastructure. Even with only a unique switch you can build a network with multiple broadcast domains. Read More …

How to disable Ctrl+Shift keyboard layout switch (Microsoft Windows)

It could happen that while we are writing on our Windows system the keyboard layout change suddenly, from US to Read More …

Common WiFi RADIUS configuration Issues

This article discusses common configuration errors when implementing WPA2 Enterprise with PEAP-MSCHAPv2, using a Windows 2008 NPS environment for error Read More …

Ethtool – Force network interface speed and duplex (Linux)

This above ethtool output displays ethernet card properties such as speed, wake on, duplex and the link detection status. Following Read More …

Data Execution Prevention (DEP) and verify status

Data Execution Prevention (DEP) is a set of hardware and software technologies that perform additional checks on memory to help Read More …

Networking – Switch Learning and Forwarding

Basically, network switches learn, filter, forward and flood Ethernet frames. After taking a switch out the box, plugging it in, Read More …