26 ◾ Information Security Management Handbook
Defending against DDoS Attacks
In the event of a typical DDoS attack, the victim alone cannot effectively defend itself. Cooperation
among all involved parties is necessary. Typical methods to protect against DDoS attacks focus
on effective coordinated technological solutions. ere are three major types of coordinated tech-
nological solutions: (1) improving the security of all relevant devices; (2) enhancing the user-level
traffic control; and (3) coordinating filters and tracing back methods.
Improving the Security of the Relevant Devices
Before initiating an effective DDoS attack, the attacker needs to involve enough zombie devices to
secure the ability to generate sufficient traffic. An ineffective and direc ...