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Six hours server downtime due to DOS attack (Denial of Service attack)

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spiros:
The server suffered a DOS attack since 21:00 and the site was down. What is a DOS attack?

A denial-of-service attack (also, DoS attack) is an attack on a computer system or network that causes a loss of service to users, typically the loss of network connectivity and services by consuming the bandwidth of the victim network or overloading the computational resources of the victim system.

A DoS attack can be perpetrated in a number of ways. There are three basic types of attack:

   1. consumption of computational resources, such as bandwidth, disk space,    or CPU time
   2. disruption of configuration information, such as routing information
   3. disruption of physical network components

Links

https://en.wikipedia.org/wiki/DDOS

joe:
What makes you think this is a denial of service?

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