Question

In order to implement a DNS amplification attack, the attacker must trigger the creation of a sufficiently large volume of DNS response packets from the intermediary to exceed the capacity of the link to the target organization. Consider an attack where the DNS response packets are 500 bytes in size (ignoring framing overhead). How many of these packets per second must the attacker trigger to flood a target organization using a 2-Mbps link?

Answer 1

2.0-Mbps = 500 packets per second.

Step-by-step explanation:

A packet has a total of 500 bytes which is equivalent to 4000 bits. Similarly, 1 Mbps has a total of 1,000,000 bits per second. Therefore,

0.5-Mbps is equivalent to (0.5*1000000)/4000 = 125 packets per second.

2.0-Mbps is equivalent to (2*1000000)/4000 = 500 packets per second.

10-Mbps is equivalent to (10*1000000)/4000 = 2500 packets per second.