Conventions used

There are a number of text conventions used throughout this book.

CodeInText: Indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "The default output is filter.ef but you can name it whatever you want."

A block of code is set as follows:

if (ip.proto == TCP) {
if (tcp.src == 80 || tcp.dst == 80) {
msg("HTTP traffic detected.\n");
}
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

if (ip.proto == TCP) {
if (tcp.src == 80 || tcp.dst == 80) {
msg("HTTP traffic detected.\n");
}
}

Any command-line input or output is written as follows:

use server/capture/smb

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Right-click on a target and click Apply as Filter | Selected."