Network Attacks and Defenses

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Chapter 5

IP-Based Denial-of-

Service Attacks

5.1   Introduction

It is a very frustrating experience when some services are

not available and the unavailability is not explained. When

a system has all its resources overloaded, it is rendered

unusable or provides very low performance for legitimate

users. This attack on system resources is called a Denial-

of-Service (DoS) attack. DoS attacks may target a system

to prevent network communication or may target an entire

organization to prevent outgoing or incoming traffic to cer-

tain network services, such as an organization’s Website or

e-mail services.

The hard truth is: orchestrating these DoS a ...