Book Image

Applied Network Security

By : Arthur Salmon, Michael McLafferty, Warun Levesque
Book Image

Applied Network Security

By: Arthur Salmon, Michael McLafferty, Warun Levesque

Overview of this book

Computer networks are increasing at an exponential rate and the most challenging factor organisations are currently facing is network security. Breaching a network is not considered an ingenious effort anymore, so it is very important to gain expertise in securing your network. The book begins by showing you how to identify malicious network behaviour and improve your wireless security. We will teach you what network sniffing is, the various tools associated with it, and how to scan for vulnerable wireless networks. Then we’ll show you how attackers hide the payloads and bypass the victim’s antivirus. Furthermore, we’ll teach you how to spoof IP / MAC address and perform an SQL injection attack and prevent it on your website. We will create an evil twin and demonstrate how to intercept network traffic. Later, you will get familiar with Shodan and Intrusion Detection and will explore the features and tools associated with it. Toward the end, we cover tools such as Yardstick, Ubertooth, Wifi Pineapple, and Alfa used for wireless penetration testing and auditing. This book will show the tools and platform to ethically hack your own network whether it is for your business or for your personal home Wi-Fi.
Table of Contents (18 chapters)

Snort as an IPS

Most companies that choose not to run an IDS do so because of the cost. Thankfully there is Snort. Snort is sometimes referred to the poor man's IDS but that is misleading. Snort is an open source yet powerful software used by many corporations and government sector organizations. Snort was developed for use in Linux systems but has been ported for use in numerous platforms including Windows, Solaris/SunOS, BSD Unix, and Mac OS X to name a few.

Snort has three main modes it operates in: NIDS, Packet Sniffer, and Packet logger. It has other modes as well (In-line, Real time, or Schedule checks) but these are the main three. In NIDS, Snort works to detect potential network intrusions using a rule-based intrusion-detection mechanism. Packet Sniffer enables it to display all network traffic to the user and provides flexibility to display entire packets or certain header information; this is great...