What is SYN flood attack and how is it detected?

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Grade: Education Subject: Ddos
What is SYN flood attack and how is it detected?
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A SYN flood attack exploits the TCP handshake process. Attackers send a flood of SYN (synchronization) packets without completing the handshake, leaving the server's connection queue full. Detection involves monitoring for a large number of SYN packets without corresponding ACK (acknowledgment) packets. Mitigation includes SYN cookies and SYN proxies.