Difference between revisions of "Ddos"

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Distributed Denial of Service (see [[DoS]]).
 
Distributed Denial of Service (see [[DoS]]).
  
A distributed denial of service is many computers on the [[Internet]] coordinating a [[DoS]] against a single host, network or network infrastructure.
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A distributed denial of service is many computers on the [[Internet]] coordinating a Denial of Service attack ([[DoS]]against a single host, network or network infrastructure.  A DDoS doesn't need to fully exhaust your services, but merely keep a steady monetary burden on the current state of your service, forcing you to eventually give in and stop the service altogether.
  
A DDoS can be done by people who have hijacked a great number of hosts (known as zombie hosts) or done by members of organizations who have moral, political, religious or capitalistic motives.
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A DDoS can be performed by people who have hijacked a great number of hosts to do their bidding (these are known as "zombie hosts").  A target of a DDoS is usually chosen for one of several reasons.  Frequently, the attackers are after some form of financial gain, usually in the form of extorsion (e.g. "Give me $1,000,000 or I will continue the DDoS until you go out of business.").  Sometimes the attacks are launched due to moral, political, or religious objections to the owners of the target systems.
  
*Stories posted to Slashdot can be seen as the control for a DDoS, and all the slashdotters clicking on the link of a site contribute to the load on that remote web serverWhen a web server is unable to handle the loads of HTTP demand it is said to have been "slashdotted". This drives home the point that freedom of speech on the [[Internet]] can be a costly affair.  You can have a good idea but if you can't put money behind it, popularity like being featured on slashdot will put you to ruins.  Looking at it another way slashdot may be an engine designed on forcing people to use advertising which pays the owner of a webpage enough to sustain slashdot hits on their content on the  [[Internet]], but it also allows outside influence and unwanted advertisement on their site which may cost the owner of the site popularity or possible capitalistic gain from their idea.
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Stories posted to various other high-profile websites can be seen as a limited form of a DDoS.  When a URL is posted, the (many) thousands of readers  click on the link within in short period of time.  The huge number of requests  will frequently overload the remote webserver with the added load.  One of the first sites to contribute to phenomenon was  [[http://slashdot.org/ Slashdot]], and when a web server is unable to handle the incoming HTTP requests, it is said to have been "slashdotted."  This drives home the point that freedom of speech on the [[Internet]] can be a costly affair.  While this can be destructive, a typcial "slashdotting" will only last a day or two; once the story containing the URL is removed from the front page of the news site (such as Slashdot), the number redirected hits drops off tremendously.
 
 
*Large organizations also have the power of "slashdotting" sites that they have a moral disagreement with.  Sometimes they'll ask you to reload the site a few times to create the extra load on the remote servers.
 

Latest revision as of 01:19, 18 January 2006

Distributed Denial of Service (see DoS).

A distributed denial of service is many computers on the Internet coordinating a Denial of Service attack (DoS) against a single host, network or network infrastructure. A DDoS doesn't need to fully exhaust your services, but merely keep a steady monetary burden on the current state of your service, forcing you to eventually give in and stop the service altogether.

A DDoS can be performed by people who have hijacked a great number of hosts to do their bidding (these are known as "zombie hosts"). A target of a DDoS is usually chosen for one of several reasons. Frequently, the attackers are after some form of financial gain, usually in the form of extorsion (e.g. "Give me $1,000,000 or I will continue the DDoS until you go out of business."). Sometimes the attacks are launched due to moral, political, or religious objections to the owners of the target systems.

Stories posted to various other high-profile websites can be seen as a limited form of a DDoS. When a URL is posted, the (many) thousands of readers click on the link within in short period of time. The huge number of requests will frequently overload the remote webserver with the added load. One of the first sites to contribute to phenomenon was [Slashdot], and when a web server is unable to handle the incoming HTTP requests, it is said to have been "slashdotted." This drives home the point that freedom of speech on the Internet can be a costly affair. While this can be destructive, a typcial "slashdotting" will only last a day or two; once the story containing the URL is removed from the front page of the news site (such as Slashdot), the number redirected hits drops off tremendously.