DoS is an attempt to make a server unavailable to users.
Performed by overloading a server with requests.
Include DNS and routing disruption.
Includes using up disk space, processor power or bandwidth.
Includes anything that allows a website to not be able to be displayed.
Distributed network denial of service.
Cheap to launch and difficult to prevent.
Performed by person or group with a grudge.
Used as distraction from other hacking attempts.
Firewalls: Rules used to prevent traffic from the web.
Switches y routers can also have Access control lists and rate limiting.
Load management hardware/software: Make sure there exists request balancing between servers.
Use of proxies.
Good quality server and hosting add more resistance to attacks.
Make a reaction plan before an attack.
While in attack:
Change ip to obtain some time.
Make traffic = null.
Be a good person.