Certified Ethical Hacker (CEH) Preparation Guide by Ahmed Sheikh

Author:Ahmed Sheikh
Language: eng
Format: epub
ISBN: 9781484272589
Publisher: Apress

Performing a DoS Attack

A denial of service is a hacker attack where a large volume of traffic is sent to a host and the host no longer has the ability to respond to legitimate users’ requests (see Figures 7-3, 7-4, and 7-5).

Figure 7-3Captured network traffic with Tcpdump

Figure 7-4Command used to start the DoS attack

Figure 7-5Sample DoS packets

NEVER use this tool or these commands outside of the isolated virtual environment.

Summary

This chapter reviewed denial-of-service attacks and different types of attacks such as Smurf, buffer overflow, ping of death, teardrop, or SYN flood, including the various symptoms that occur during a DoS attack. It also covered techniques and countermeasures that are important for securing systems.

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