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SYN flood

SYN flooding (or TCP SYN flood) is a form of denial-of-service attack against systems that provide services over the Transmission Control Protocol (TCP). It exploits the way many TCP implementations handle incoming connection requests by causing a server to retain state for large numbers of incomplete (or “half-open”) connections, leaving insufficient…

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Technical details

ClientServerACKSpoofingIP address
8 related topics

Overview

TCPDenial-of-service attackCloudflareAttack vector
4 related topics

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SYN flood

Nodes15
Edges14
Triples8
Avg. degree1.87
Density0.133333
Components1

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SYN flood

Top relations

related to Countermeasures · 5
SYN flood → RFC, SYN, SYN-ACK, SYN-RECEIVED, These

Important terminology Word statistics

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Important terminology

syn server attack tcp connection connections client half-open resources legitimate flooding requests state backlog attacks flood systems ip causing pending

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
DNSinstance ofeven alongside larger volumetric attacks0.80text
UDP floodsinstance ofeven alongside larger volumetric attacks0.80text
SYN cachesinstance ofand more robust end-host techniques0.80text
SYN floodrelated to CountermeasuresRFC0.60section
SYN floodrelated to CountermeasuresSYN0.60section
SYN floodrelated to CountermeasuresThese0.60section
SYN floodrelated to CountermeasuresSYN-RECEIVED0.60section
SYN floodrelated to CountermeasuresSYN-ACK0.60section

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    Min side: 3
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