Consider a distributed denial of service (DDOS) attack, Assume the attacker has compromised a number of broadband connected computers to use as zombie systems. If the ISP provides a maximum uplink data rate of 512 Kbps in ADSL, what is the maximum number of 512-byte ICMP echo request (ping) packets a single zombie computer can send per second? How many such zombie systems would the attacker need to flood a target server in an organization that has: A. Fast Ethernet. B. Gigabit Ethernet.
Consider a distributed denial of service (DDOS) attack, Assume the attacker has
compromised a number of broadband connected computers to use as zombie systems. If the
ISP provides a maximum uplink data rate of 512 Kbps in ADSL, what is the maximum number of
512-byte ICMP echo request (ping) packets a single zombie computer can send per second?
How many such zombie systems would the attacker need to flood a target server in an
organization that has:
A. Fast Ethernet.
B. Gigabit Ethernet.
The maximum number of 512-byte ICMP echo request (ping) packets that a single zombie computer can send per second over an ADSL link with a maximum uplink data rate of 512 Kbps can be calculated as follows:
Maximum data rate in bits per second = 512 Kbps = 512,000 bits per second
Maximum number of 512-byte packets per second = Maximum data rate in bits per second / Size of each packet in bits
= (512,000 bits per second) / (512 bytes * 8 bits per byte)
= 125 packets per second
So, a single zombie computer can send a maximum of 125 512-byte ICMP echo request packets per second over an ADSL link with a maximum uplink data rate of 512 Kbps.
To flood a target server, the attacker would need to have multiple zombie systems. The number of zombie systems required would depend on the bandwidth of the target server's network interface.
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