What is the consequence of a vast number of incomplete connections in a SYN flood attack?

What is the consequence of a vast number of incomplete connections in a SYN flood attack?

• A. The system begins to process legitimate requests
• B. The target system becomes responsive to new connections
• C. The system eventually denies legitimate requests
• D. The target remains unaffected

Answer: (C)

In the context of a SYN flood attack, a vast number of incomplete connections can overwhelm the target system's resources. This type of attack exploits the TCP handshake process, where the attacker sends a multitude of SYN requests to the target but never completes the handshake by sending the final ACK. As a result, the target system allocates resources to maintain these half-open connections, which can exhaust its ability to process further requests. When the system is inundated with these incomplete connections, it becomes unable to handle legitimate traffic effectively. Consequently, legitimate users may experience significant delays or, in worst-case scenarios, be completely denied access to the services they require. This leads to degraded performance or service unavailability, making it nearly impossible for legitimate requests to be processed in a timely manner. Hence, the consequence of a vast number of incomplete connections is that the system ultimately denies legitimate requests, creating significant operational challenges for the affected organization.

In the context of a SYN flood attack, a vast number of incomplete connections can overwhelm the target system's resources. This type of attack exploits the TCP handshake process, where the attacker sends a multitude of SYN requests to the target but never completes the handshake by sending the final ACK. As a result, the target system allocates resources to maintain these half-open connections, which can exhaust its ability to process further requests.

When the system is inundated with these incomplete connections, it becomes unable to handle legitimate traffic effectively. Consequently, legitimate users may experience significant delays or, in worst-case scenarios, be completely denied access to the services they require. This leads to degraded performance or service unavailability, making it nearly impossible for legitimate requests to be processed in a timely manner. Hence, the consequence of a vast number of incomplete connections is that the system ultimately denies legitimate requests, creating significant operational challenges for the affected organization.