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Denial of service is an attack that disturb the availability and accessibility of network resources to authorized users

Denial of service is an attack that disturb the availability and accessibility of network resources to authorized users. Usually, DoS attack happens when an attacker sending messages to exploit some vulnerabilities prompting the anomaly or paralysis of network based system. The effect of these attack is massive where attacker will forms flooding packets to immerse the limited of the bandwidth, in this way it will makes the victim’s expected users impossible (Nsfocus, 2014).
According to Gulshan Kumar, 2014, Denial of Service (DoS) have been a critical issues for long time and many years however stay to be un-resolved. In the current past, DoS attack are thought to be main issues in network security’s field as these attacks incidents keep on prevailing. In general, DoS attackers will exploiting TCP/IP and UDP protocols for launches the attacks by directing a large number of anomalous network packets towards the victim, resulting in overloading the network resources such as use whole bandwidth or and memory.

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