Performing a Denial of Service Attack from the WAN

CEH Exam Domain:
Domain 1: Background
Domain 4: Tools/Systems/Programs

CEH Objective Mapping:
Objective 1.2 Information Security Threats and Attack Vectors
Objective 4.3 Information Security Tools
 

Overview

In this lab, you will perform various denial-of-service attacks from a wide area network. A denial-of-service attack is an attacker overwhelms one or more services on a host so it stops responding to requests.

outcomes:

In this lab, you will learn to:

  1.  Use a TCP flood to perform a denial-of-service attack.
  2. Use a UDP flood to perform a denial-of-service attack.
  3.  Use an HTTP flood to perform a denial-of-service attack.
Courses

Key terms and descriptions

TCP
Transmission Control Protocol is a network protocol designed to send and ensure end-to-end delivery of data packets over the Internet.
UDP
User Datagram Protocol is a transport layer protocol and simple connectionless transmission model with a minimum of protocol mechanism. It has no handshaking dialogues and is used where error checking and correction is either not necessary or is performed.
HTTP
The protocol used by the World Wide Web. HTTP defines how messages are formatted and transmitted and how Web servers and browsers should respond to requests.
Denial of Service (DoS)
Is an interruption in an intended user's access to a computer network, typically one caused with malicious intent.
Low Orbit Ion Cannon
An open-source network stress testing and denial-of-service attack application.