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Suppose that RWLitterinBulkan online retailer, is subjected to a distributed denial of service (DDOS) attack. RWLittleinBulk's web retail system is comprised of 100 web servers
Suppose that RWLitterinBulkan online retailer, is subjected to a distributed denial of service (DDOS) attack. RWLittleinBulk's web retail system is comprised of 100 web servers and the attacker recruits 50 zombie devices to constantly send 60-byte SYN packets to the RWLittleinBulk's web servers. Suppose that each of RWLittleinBulk's servers maintains a table for 256 TCP connection requests, and that in response to a SYN, these servers send a SYN-ACK packet four times, at t = 32 second time intervals, then purge the request from the table if no reply is forthcoming. i. What is the total connection capacity of RwLittleinBulk's servers? ii. In packets/second what is the rate at which SYN packets will fill connection tables? iii. How many packets/second does each zombie therefore need to send? iv. How much bandwidth does each zombie need
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