DoS against the DNS

DoS stands for Denial of Service. A DoS attack against the DNS aims to ultimately result in the DNS service becoming inaccessible or severely degraded. DoS attacks may be crashing a DNS server via some form of vulnerability in the DNS server software or cutting off access through a network interruption.

In Distributed Denial of Service (DDoS) attacks, attackers deploy multiple devices to attack a single DNS server, depleting its network, memory, and CPU resources.