CS6262 Final Exam (all solved)

Random Scanning correct answers Each comprised computer probes random addresses Permutation Scanning correct answers All comprised computers share a common psuedo-random permutation of the IP address space Signpost Scanning correct answers Uses the communication patterns of the comprised computer to find a new target Hit List Scanning correct answers A portion of a list of targets is supplied to a comprised computer Subnet Spoofing correct answers Generate random addresses within a given address space Random Sppofing correct answers Generate 32-bit numbers and stamp packets with them Fixed Spoofing correct answers The spoofed address is the address of the target Server Application correct answers The attack is targeted to a specific application on a server Network Access correct answers The attack is used to overload or crash the communication mechanism of a network Infrastructure correct answers The motivation of this attack is a crucial service of a global internet operation, for example core router DoS Bug (Amplification Attack) correct answers Design flaw allowing one machine to disrupt a service DoS Flood (Amplification Attack) correct answers Command botnets to generate flood of requests UDP-based NTP correct answers -Particularly vulnerable to amplification attacks -Small command can generate a large response -Vulnerable to source IP spoofing -Difficult to ensure computers only communicate with legitimate NTP servers IP Header Format correct answers -Connectionless -Unreliable -No authentication SYN Flood correct answers A type of DoS where an attacker sends a large amount of SYN request packets to a server in an attempt to deny service.