3.4. Distributed Denial of Service Attacks
DDoS attacks use a combination of the techniques described in this chapter to launch a large-scale attack against a network or network device. DDoS attacks are very effective in knocking their targets offline, because they are focused attacks that generally exploit a small number of weaknesses.
A DDoS attack is relatively simple: An attacker scans a series of network blocks looking for specific vulnerabilities. When a vulnerable host is found it is exploited and used to scan for other hosts with the same vulnerability or group of vulnerabilities. This creates a chain of computers that are under control of the attacker.
The tools used to launch DDoS attacks are automated: when the DDoS tool locates a ...
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