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وبلاگ ارز دیجیتال ایران : اخبار حوزه ارزهای دیجیتال و تکنولوژی بلاکچین : قیمت لحظه ای ارز دیجیتال بیت کوین اتریوم و ...

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DNS amplification attacks are not threats against the DNS systems. Instead, they exploit the open nature of DNS services to strengthen the force of distributed denial of service (DDoS) attacks. Instead, they exploit the open nature of DNS services to strengthen the force of distributed denial of service (DDoS) attacks.
DNS-based attacks are on the rise because many organizations don’t realize DNS is a threat vector and therefore don’t protect it.
Nowadays, cyber attack is common. Even they are becoming a big headache for many IT companies and businesses. In recent years, some big names such as Google, The New York Times, etc. have fallen victim to cyber attacks.
Attackers are taking advantage of weaknesses in the DNS protocol in order to launch a high bandwidth sophisticated attack on their victim using amplification effects.
DNS flood attacks should be clearly differentiated from DNS amplification attacks. DNS amplification is an asymmetrical DDoS attack in which the attacker sends out a small look-up query with spoofed target IP, making the spoofed target the recipient of much larger DNS responses. With these attacks, the attacker’s goal is to saturate the network by continuously exhausting bandwidth capacity.
Pour aller plus loin, les attaques d’amplification DNS utilisent des adresses IP usurpées. l’US-CERT suggère que les fournisseurs de services Internet refuse tout le trafic DNS comportant des adresses usurpées.
In computing, a denial-of-service attack (DoS attack) is a cyber-attack in which the perpetrator seeks to make a machine or network resource unavailable to its intended users by temporarily or indefinitely disrupting services of a host connected to the Internet. Denial of service is typically accomplished by flooding the targeted machine or resource with superfluous requests in an attempt to overload systems and prevent some or all legitimate requests from being fulfilled.
A Domain Name Server (DNS) Amplification attack is a popular form of Distributed Denial of Service (DDoS), in which attackers use publically accessible open DNS servers to flood a target system with DNS response traffic.