In terms of TCP session hijacking, what is meant by "TCP sequence prediction"?

TCP sequence prediction refers to the technique used by an attacker to predict the correct sequence numbers that are used in TCP communications. In a typical TCP connection, each packet sent includes a sequence number which is used to ensure that packets are received in the correct order and to manage data flow.

When an attacker performs TCP session hijacking, they often need to effectively impersonate one of the parties in the communication. By accurately predicting the sequence numbers for the TCP packets, the attacker can send forged packets that appear to be part of the established session, thereby gaining unauthorized control or access.

One-way communication is characteristic of how the attacker sends data to the server—it's vital for them to craft and send packets that match the expected sequence. This greatly enhances their chances of being accepted by the server, successfully injecting malicious commands or intercepting the session without the legitimate user’s knowledge.

The other options do not align with the concept of TCP sequence prediction. Accessing the server without prediction does not involve the prerequisite skills of knowing sequence numbers. Establishing a secure connection contradicts the notion of hijacking, which inherently exploits a lack of security in the session. Lastly, interfering with NAT behavior is unrelated, as it pertains to manipulating network address translation, rather than directly affecting the