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An attacker wants to carry out a denial-of-service (DoS) attack by 'squeezing out' TCP flows in a network. But knowing that the network's firewall limits the rate of UDP, the attacker chooses to use TCP for the attack instead of UDP. What is true about this TCP vs TCP attack: O It will always be as effective as a UDP attack, so long as the application send lots of data through the network, targeting the bottleneck link O It will not be effective using long-lived TCP connections, as they spend majority of their lifetime in AIMD, which cannot squeeze out other TCP connections. Short-lived TCP connections are effective over the bottleneck link, since it is mostly in slow start

An attacker wants to carry out a denial-of-service (DoS) attack by 'squeezing out' TCP flows in a network. But knowing that the network's firewall limits the rate of UDP, the attacker chooses to use TCP for the attack instead of UDP. What is true about this TCP vs TCP attack: O It will always be as effective as a UDP attack, so long as the application send lots of data through the network, targeting the bottleneck link O It will not be effective using long-lived TCP connections, as they spend majority of their lifetime in AIMD, which cannot squeeze out other TCP connections. Short-lived TCP connections are effective over the bottleneck link, since it is mostly in slow start

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Computer Networks - Internet Architecture & Application Layer

An attacker wants to carry out a denial-of-service (DoS) attack by 'squeezing out' TCP flows in a network. But knowing that the network's firewall limits the rate of UDP, the attacker chooses to use TCP for the attack instead of UDP. What is true about this TCP vs TCP attack: It will always be as effective as a UDP attack, so long as the application send lots of data through the network, targeting the bottleneck link It will not be effective using long-lived TCP connections, as they spend majority of their lifetime in AIMD, which cannot squeeze out other TCP connections. Short-lived TCP connections are effective over the bottleneck link, since it is mostly in slow start Parallel long-lived TCP connections targeting the bottleneck link by the attacker will have more than their fair share, so they will be more effective than short-lived parallel consecutive TCP connections It will never be effective because TCP is regulated using congestion control, so the attacker will be limited too, no matter what the attacker tries It will not be effective targeting the bottleneck link, since attacker's TCP will back off due to loss. But parallel consecutive short-lived TCP connections over moderately congested links can open their windows exponentially so their attack will likely be effective
Transcribed Image Text:An attacker wants to carry out a denial-of-service (DoS) attack by 'squeezing out' TCP flows in a network. But knowing that the network's firewall limits the rate of UDP, the attacker chooses to use TCP for the attack instead of UDP. What is true about this TCP vs TCP attack: It will always be as effective as a UDP attack, so long as the application send lots of data through the network, targeting the bottleneck link It will not be effective using long-lived TCP connections, as they spend majority of their lifetime in AIMD, which cannot squeeze out other TCP connections. Short-lived TCP connections are effective over the bottleneck link, since it is mostly in slow start Parallel long-lived TCP connections targeting the bottleneck link by the attacker will have more than their fair share, so they will be more effective than short-lived parallel consecutive TCP connections It will never be effective because TCP is regulated using congestion control, so the attacker will be limited too, no matter what the attacker tries It will not be effective targeting the bottleneck link, since attacker's TCP will back off due to loss. But parallel consecutive short-lived TCP connections over moderately congested links can open their windows exponentially so their attack will likely be effective
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