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 Re: DDoS and sudaneseonline (Re: الامين موسى البشاري)
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distributed denial-of-service attack (DDoS)
A distributed denial-of-service (DDoS) attack is one in which a multitude of compromised systems attack a single target, thereby causing denial of service for users of the targeted system. The flood of incoming messages to the target system essentially forces it to shut down, thereby denying service to the system to legitimate users.
In a typical DDoS attack, the assailant begins by exploiting a vulnerability in one computer system and making it the DDoS master. The attack master, also known as the botmaster, identifies and identifies and infects other vulnerable systems with malware. Eventually, the assailant instructs the controlled machines to launch an attack against a specified target.
There are two types of DDoS attacks: a network-centric attack which overloads a service by using up bandwidth and an application-layer attack which overloads a service or database with application calls. The inundation of packets to the target causes a denial of service. While the media tends to focus on the target of a DDoS attack as the victim, in reality there are many victims in a DDoS attack -- the final target and as well the systems controlled by the intruder. Although the owners of co-opted computers are typically unaware that their computers have been compromised, they are nevertheless likely to suffer a degradation of service and not work well.
A computer under the control of an intruder is known as a zombie or bot. A group of co-opted computers is known as a botnet or a zombie army. Both Kaspersky Labs and Symantec have identified botnets -- not spam, viruses, or worms -- as the biggest threat to Internet security.
Related glossary terms: RSA algorithm (Rivest-Shamir-Adleman), data key, greynet (or graynet), spam cocktail (or anti-spam cocktail), fingerscanning (fingerprint scanning), munging, insider threat, authentication server, defense in depth, nonrepudiation
This was last updated in May 2013
Posted by: Margaret Rouse
http://searchsecurity.techtarget.com/definition/distributed-...al-of-service-attack
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| العنوان |
الكاتب |
Date |
| DDoS and sudaneseonline | بكرى ابوبكر | 09-23-13, 08:42 PM |
| Re: DDoS and sudaneseonline | أيمن محمود | 09-23-13, 08:49 PM |
| Re: DDoS and sudaneseonline | Dr. Ahmed Amin | 09-23-13, 08:52 PM |
| Re: DDoS and sudaneseonline | الامين موسى البشاري | 09-23-13, 08:56 PM |
| Re: DDoS and sudaneseonline | الامين موسى البشاري | 09-23-13, 08:57 PM |
| Re: DDoS and sudaneseonline | Ridhaa | 09-23-13, 09:06 PM |
| Re: DDoS and sudaneseonline | Ridhaa | 09-23-13, 09:11 PM |
| Re: DDoS and sudaneseonline | عبدالغفار محمد سعيد | 09-23-13, 09:15 PM |
| Re: DDoS and sudaneseonline | Ridhaa | 09-23-13, 09:33 PM |
| Re: DDoS and sudaneseonline | ABDALLAH ABDALLAH | 09-24-13, 00:29 AM |
| Re: DDoS and sudaneseonline | Sameer Kuku | 09-24-13, 00:58 AM |
| Re: DDoS and sudaneseonline | Sameer Kuku | 09-24-13, 03:50 AM |
| Re: DDoS and sudaneseonline | Sameer Kuku | 09-24-13, 04:19 AM |
| Re: DDoS and sudaneseonline | معتصم احمد صالح | 09-24-13, 05:02 AM |
| Re: DDoS and sudaneseonline | Sameer Kuku | 09-24-13, 05:58 AM |
| Re: DDoS and sudaneseonline | Elfadil Sabeil | 09-24-13, 07:17 AM |
| Re: DDoS and sudaneseonline | جعفر محي الدين | 09-24-13, 07:37 AM |
| Re: DDoS and sudaneseonline | ابو جهينة | 09-24-13, 09:01 AM |
| Re: DDoS and sudaneseonline | Elfadil Sabeil | 09-24-13, 11:29 AM |
| Re: DDoS and sudaneseonline | Sameer Kuku | 09-24-13, 04:28 PM |
| Re: DDoS and sudaneseonline | Elfadil Sabeil | 09-24-13, 08:20 PM |
 Re: DDoS and sudaneseonline | Hani Arabi Mohamed | 09-24-13, 09:19 PM |
 Re: DDoS and sudaneseonline | بكرى ابوبكر | 06-28-18, 03:45 AM |
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