When working with TCP/IP, the model is simplified to four layers plus the physical layer as shown in Figure 2-4. This figure depicts the encapsulation process with protocol overhead down to Ethernet, ...

Security continues to be the biggest concern for IT managers and, in turn, design engineers developing firewall systems. With more viruses popping up and hackers attacking more often, corporations are ...

One of the features of Wireshark that you may have noticed, if you’ve been reading my posts this week and doing some experimenting on your own, is that the program color-codes packets in the packet ...