Information, Computer and Network Security Terms Glossary and Dictionary

TCP Sequence Prediction Attack

A TCP sequence prediction attack is to hijack an existing TCP session by injecting packets which pretend to come from one computer involved in the TCP session. The sequence number of TCP ensures that received packets are delivered to higher levels of the protocol stack in the correct order. If a communication is in process, then you can assume that authentication between the two systems has already been established. Theoretically, someone may highjack the communication session and send their own packets to the destination system without any need for further authentication by guessing or predict the TCP sequence numbers..

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TCP Sequence Prediction Attack