TechTutorHelp_004

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(3 pages Writeup)

 TCP SYN Flood

 You have created a Web traffic stream between the client and the server nodes.

Answer the following questions

1. Explain how the TCP SYN flood attack works.

2. Explain how SYN cookies work to prevent denial-of-service effect from SYN flood attack?

3. Explain why the amount of legitimate traffic increases during the attack? (hint – if you did tcpdump at the server node-check that).

4. If we remove spoofing from the attack and do the attack without SYN cookies, can you explain what happens? And why it happens? For hints you can think about looking at traffic patterns on the server node.

5. Can you modify the attack in any way so that it is effective without spoofing and how would you do this?

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