SYN flood

SYN flood

A hacking technique used to cause a denial of service, where the attackers send a large number of TCP SYN packets to the target with spoofed-source IP addresses. This results in many half-open TCP connexions on the target, thus tying up the TCP state resources. SYN is short for synchronized, which designates the first packet that is sent across a TCP network.

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Part of Speech: noun
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Industry/Domain: Internet
Category: Internet security
Company: McAfee
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