Ebook Hack the stack - Using snort and ethereal to master the 8 layers of an insecure network: Part 1

Ebook Hack the stack - Using snort and ethereal to master the 8 layers of an insecure network: Part 1 includes contents: Chapter 1 Extending OSI to network security, Chapter 2 Layer 1: The physical layer, Chapter 3 Layer 2: The data link layer, Chapter 4 Layer 3: The network layer, Chapter 5 Layer 4: The transport layer.