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Linux Firewalls by Michael Rash

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Transport Layer Attack Definitions

Like the definition of a network layer attack (given in Chapter 2), we define a transport layer attack as a packet or series of packets that abuses the fields of the transport layer header in order to exploit either a vulnerability or error condition in the transport stack implementation of an end host.

Transport layer attacks fall into one of the following three categories:

Connection resource exhaustion

Packets that are designed to saturate all available resources for servicing new connections on a targeted host or set of hosts. A good example is a DDoS attack in the form of a SYN flood.

Header abuses

Packets that contain maliciously constructed, broken, or falsified transport layer headers. A good example is a ...

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