Defending against Denial of Service (DoS) Attacks

What is a DoS Attack?

According to NIST, a denial of service (DoS) is:

“The prevention of authorized access to resources or the delaying of time-critical operations. (Time-critical may be milliseconds or it may be hours, depending upon the service provided).”

denial of service (DoS) – Glossary | CSRC (nist.gov)

a distributed denial of service (DDoS) is:

“A denial of service technique that uses numerous hosts to perform the attack.”

distributed denial of service (DDoS) – Glossary | CSRC (nist.gov)

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