To get the most out of this book

This book covers many topics, and the while the authors have done their best to explain these topics, there are some fundamental topics of networking and security that readers may wish to review in order to better understand the concepts taught throughout the book.

Some of these topics include the following:

• The seven layers of the OSI model
• The TCP/IP suite
• The TCP three-way handshake
• Protocols and port numbers
• Wireless basics (802.11 a,b,g,n,ac), WEP, and WPA2
• Basic Linux commands (including ls, cd, and clear)

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: "Mount the downloaded WebStorm-10*.dmg disk image file as another disk in your system."

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

Nmap 172.16.54.144 –sV 

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: "Select System info from the Administration panel."

Warnings or important notes appear like this.

Tips and tricks appear like this.