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Register a new usersimulation of the denial of service attacks and proposing appropriate solutions
محاكاة لهجمات حجب الخدمة وتطبيق تقنيات الحماية
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Tishreen University ورقة بحثية
Publication date
2017
fields
Informatics Engineering
and research's language is
العربية
Authors
Sleman Khadoor( طالب )
Created by
sleman khadoor
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دراسة بعض الخدمات التي تقدمها شبكة كلية الهندسة المعلوماتية، وتحديد نقاط الضعف في كل خدمة. ومن ثم إجراء محاكاة لهجمات حجب الخدمة التي يمكن تطبيقها ضمن الشبكة، و اقتراح الحلول الأمنية المتاحة لمنع حدوث مثل هذه الهجمات.
No English abstract
References used
(Data Center and Enterprise Network Security. Matthew Caesar. (jan/29/2013
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This research evaluates the performance degradation of information channels in
multifunction radar due to electronic countermeasures (standoff jamming) on main loop
of radar antenna .This evaluation is performed by using the signal to noise ratio(
SNR )
and the probability of detection parameters with and without jamming.
Improvement of radar performance is proposed by using the following (ECCM)
techniques :Constant False Alarm Rate( CFAR), Pulse compression (pc) , frequency agility
(FA), Frequency Diversity(FD),Logarithmic Reception , and Automatic Gain
Control(AGC).
In this research MATLAB, software environment is used that has advanced
mathematical tools, and graphical interactive ability.
The extraction and analysis of human gait characteristics using image sequences is currently an intense area of research. Recently, the focus of this research area has turned to the realm of computer vision as a way of performing quickly and ac
curately gait analysis system. Such a system could be used as a preprocessing step in a more sophisticated gait analysis system or could be used for rehabilitation purposes.In this thesis, a new method is proposed which utilizes a novel fusion of spatial computer vision operations as well as motion in order to accurately and efficiently determine the center of mass of a walking person at a video scene. Then we make a comparison between our method’s results and the inverted pendulum model of the movement's center of mass of a walking person in the XY plane. The results showed a significant correspondence between the model and the results we have obtained, which opens the way for further research to discover defects walking or develop algorithms for humanoid robots.
In this study, we present a state-of-art model; we call SYRIA, to simulate the activity of ventricular myocardial cell as an example of simulating a human cell, in which we use the latest mathematical models of cardiac cell. We rely on O'Hara (O'Hara
, et al., 2011) for modeling electrical activity, ions hemostasis, and contracting. Our presented model takes into consideration the role of potassium channels KATP, chloride channels, volume regulation channels based on the Kyoto model (A.Takeuchi, 2006), PH regulation channels based on Leem model (Leem, et al., 1999), and the improvement of the values of some variables based on the results of modern experiments, especially concentrations of ions within the mitochondrial and cytoplasm, the values of calcium buffers in the SR, values of the conductance of membrane channels, and concentrations of metabolites in the mitochondria. The previous models have been linked to a mitochondrial model based on Kembro (Kembro, et al., 2013). The SYRIA model is based on the integration and improvement of the best known models in a hierarchical structure that facilitates understanding, monitoring and reuse, we also present models for testing drugs and some external influences. The programming process is done using blocks of M-file and S-function in Simulink.
By comparing the results obtained from the simulation with the laboratory results, we observe that computer simulations give results within the normal physiological range
.
Distributed Denial of Service attack (DDOS) on Vehicular Ad Hoc Networks
(VANETs) is considered to be one of the most serious types of attacks that can be targeted
to those networks. The danger of this attack is in the difficulty of detection becau
se of the
cooperation of several attacking nodes in the network, and its impact on the availability
requirement that is one of the most important security requirements in a network offering
real-time applications .In our research, we study the effect of this attack on VANET
network in the city, taking into consideration two cases. In the first case the target of the
attack is the nodes, while in the second one, the target is the road side units (RSU).
Simulation results have shown that this attack has a significant impact on both cases, by
comparing the basic parameters of the network, such as throughput in/out and the number
of dropped packets, before and after the attack.
Software Defined Radios (SDR) are highly configurable hardware and
software platforms that enable the implementation of the rapidly expanding
3G and 4G digital wireless communication infrastructures. Many
sophisticated signal processing tasks are
performed in a SDR platform, for
example: channel estimation, equalisation, forward error correction,
adaptive antennas, rake receiving, modulation, advanced compression
algorithms, and vocoding.
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