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TCP half-open

The term half-open refers to TCP connections whose state is out of synchronization between the two communicating hosts, possibly due to a crash of one side. A connection which is in the process of being established is also known as embryonic connection. The lack of synchronization could be due to a SYN flood, which is a type of denial-of-service attack.

Embryonic connection, Stateful firewall timeout & Overview

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Embryonic connection

Three state systemSYN packetSYN/ACK
3 related topics

Stateful firewall timeout

Stateful firewall
1 related topics

Overview

TCPSYN floodDenial-of-service attack
3 related topics

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Overview

Stateful firewall timeout

Embryonic connection

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TCP half-open

Nodes11
Edges10
Triples0
Avg. degree1.82
Density0.181818
Components1

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Important terminology

connection state tcp syn half-open also embryonic firewall now established synchronization due stateful end sends packet information ack term connections

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