Question

This type of DoS attack involves sending a spoofed TCP SYN packet to an open port with the host IP address as both source and destination. This causes the host to reply to itself continuously.

Option 1: Fraggle
Option 2: Smurf
Option 3: Land
Option 4: None of the above

Answer 1

The described DoS attack is known as the Land attack and occurs when a spoofed TCP SYN packet is sent to a host with its own IP for both source and destination, leading to a self-replicated response loop.

Step-by-step explanation:

The type of DoS attack described in the question is known as the Land attack. This attack involves sending a spoofed TCP SYN packet to a host with its own IP address as both the source and the destination. The result is that the host system keeps responding to itself, leading to a denial-of-service condition as it becomes overwhelmed with these repetitive tasks.

Here's a brief overview of the other attacks mentioned for comparison:

• A Smurf attack involves sending ICMP requests to network broadcast addresses from a spoofed source IP, causing all the hosts to reply to the victim and overwhelm it with traffic.
• Fraggle is similar to a Smurf attack but uses UDP echo packets directed to a broadcast address, again with a spoofed source IP pointing to the victim.