Figure 1. This simplified network layer model illustrates the separation of networking functions from the applications they serve. Click here to see an enlarged diagram. These days, almost all ...

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 ...

With so much of Computer use these days revolving around the Internet and communicating with others, its important that you understand what exactly a network is. Without networks, all communication ...