Figure 1. A screen capture of an exchange between a desktop computer and a DHCP server. Click here to see an enlarged diagram. Frequently, all that is required to establish a connection to the ...

For network admins and network security professionals, one of the most important tools to learn to use is Wireshark (formerly Ethereal), a free and open source network analyzer/packet sniffer software ...

If you are like most people, your home or small office wireless router probably is running without any encryption whatsoever, and you are a sitting duck for someone to easily view your network traffic ...