Iraj Sadegh Amiri, Mohammad Reza Khalifeh Soltanian's Theoretical and Experimental Methods for Defending Against PDF

By Iraj Sadegh Amiri, Mohammad Reza Khalifeh Soltanian

ISBN-10: 0128053917

ISBN-13: 9780128053911

ISBN-10: 0128053992

ISBN-13: 9780128053997

Denial of provider (DoS) assaults are a kind of assault that seeks to make a community source unavailable as a result of overloading the source or computer with an overpowering variety of packets, thereby crashing or significantly slowing the functionality of the source. allotted Denial of carrier (DDoS) is a big scale DoS assault that's disbursed within the web. each machine which has entry to the net can behave as an attacker. quite often bandwidth depletion may be labeled as both a flood or an amplification assault. Flood assaults could be performed via producing ICMP packets or UDP packets during which it could possibly make the most of desk bound or random variable ports. Smurf and Fraggle assaults are used for amplification assaults. DDoS Smurf assaults are an instance of an amplification assault the place the attacker sends packets to a community amplifier with the go back handle spoofed to the victim’s IP tackle. This publication offers new study and methodologies besides a proposed set of rules for prevention of DoS assaults that has been written in keeping with cryptographic options comparable to birthday assaults to estimate the speed of assaults generated and handed alongside the routers. as a result, attackers will be pointed out and prohibited from sending junk mail site visitors to the server which may reason DDoS assaults. because of the occurrence of DoS assaults, there was loads of study carried out on the right way to observe them and stop them. The authors of this brief structure identify offer their examine effects on supplying an efficient method to DoS assaults, together with advent of the hot set of rules that may be carried out with a view to deny DoS attacks.

A complete research at the fundamentals of community security
Provides a large revision on shopper puzzle theory
An experimental version to mitigate dispensed denial of carrier (DDoS) attacks

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Additional info for Theoretical and Experimental Methods for Defending Against DDOS Attacks

Sample text

Router B divides all of the edge routers IP address, which has sent request to its network, to j group of IP address in order to raise the speed of finding attackers and mitigation of DDoS attacks. When the edge routers receive this “Flag” packet, they run some scripts that we will describe in the next section to find out whether or not the attackers are in their local networks. If they can find any source attacker then they reply the router B with a new packet under name of “Response to Flag yes”, which means that we find attacker or attackers and add them to our block list to block their requests.

The path used is not necessary to be the optimal path. In this situation, existing algorithms that were used to obtain the shortest path, they cannot be used always to find the solution. Optimal solutions to the 4 × 4 sliding tile problem can be acquired by using pattern databases introduced by Culberson and Schaeffer (1996). The main purpose behind incorporating pattern databases into the client puzzle scheme is that they consume more memory rather than processor resource, when search time is reduced desirably.

In order to achieve best results, we run our algorithm with two different values of router threshold setting b and compared results. Chen et al. 1. 1 to make a trade off and find an appropriate router threshold setting. Regarding to the definition of b, choosing any value below 2 makes the algorithm very sensitive to any small fluctuation of input traffic and CPU usage. 2 shows the difference between choosing the b1 value. In this graph, the arrow shows the attack traffic. By setting any value below 3 for b1, false-positive errors would be increased by detecting legal traffic request as attacks.

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