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: "Install the downloaded .msi file by following the instructions."

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

nmap -sS -sV -PN -T4 -oA testsmtp -p T:25 -v -r 192.168.1.*

Bold: Indicates a new term, an important word, or words that you see on screen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Select Quick scan from the Profile drop-down list."