In this book, you need the following:

• A PC with a working internet connection
• Windows system, preferably Windows Server, but Windows 10 is okay. You need Administrator permissions as well.
• A Linux system, an emulator running on Windows works too.

We also provide a PDF file that has color images of the screenshots/diagrams used in this book. You can download it here: https://www.packtpub.com/sites/default/files/downloads/9781789534818_ColorImages.pdf.

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: "In this entry, 162.29.5.12 is the source IP address and 0.0.0.0 is the wildcard mask."

A block of code is set as follows:

11111111.11111111.11111111.11111111 (decimal 255.255.255.255)

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

$ nslookup packt.com

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: "The message The service cannot be started, either because it is disabled or because it has no enabled devices associated with it indicates that one or more services, programs, or scripts has failed to start."