Analýza velkých útok? DDoS, které vychází z r?zných zdroj?
07.09.2006Internet distributed denial of service (DDoS) attacks are becoming increasingly prevalent. To prevent the discovery of attack sources, attackers have been known to spoof the source IP addresses of packets in DDoS attack. These spoofed addresses were often chosen randomly from the IPv4 space, which allowed a technique called backscatter analysis to be used to infer the prevalence of such spoofed DDoS attacks on the Internet. This technique works by measuring the amount of unwanted tra±c sent to unused address blocks. Backscatter tra±c originates from attack targets responding to the attack packets by replying to spoofed source addresses. Indeed, much of the current understanding of the nature of DDoS attacks is a result of analyzing such backscatter data by monitoring lightly used or unused address blocks.
Zdroj: http://www.eecs.umich.edu/~zmao/Papers/spoof.pdfAutor: JP
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