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 …

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 …

VLANs Configurations

A Local Area Network (LAN) was originally defined as a network of computers located within the same area. Today, Local Read More …

How to block Zip Files in Exchange 2007, Exchange 2010 or SBS 2011

Let’s face it, a lot of malware comes inside zip files through E-mail. Wouldn’t it be nice to just block Read More …