Software Defined Networks (SDN) has created great potential and hope to
overcome the need for secure, reliable and well managed next generation
networks to drive effective service delivery on the go and meet the demand
for high data rate and seamless connectivity expected by users. Thus, it
is a network technology that is set to enhance our day-to-day activities.
As network usage and reliance on computer technology are increasing
and popular, users with bad intentions exploit the inherent weakness of
this technology to render targeted services unavailable to legitimate users.
Among the security weaknesses of SDN is Distributed Denial of Service
(DDoS) attacks.
Even though DDoS attack strategy is known, the number of successful
DDoS attacks launched has seen an increment at an alarming rate over
the last decade. Existing detection mechanisms depend on signatures of
known attacks which has not been successful in detecting unknown or
different shades of DDoS attacks. Therefore, a novel detection mechanism
that relies on deviation from confidence interval obtained from the normal
distribution of throughput polled without attack from the server. Furthermore, sensitivity analysis to determine which of the network metrics (jitter, throughput and response time) is more sensitive to attack by
introducing white Gaussian noise and evaluating the local sensitivity using feed-forward artificial neural network is evaluated. All metrics are sensitive in detecting DDoS attacks. However, jitter appears to be the most sensitive to attack. As a result, the developed framework provides
an avenue to make the SDN technology more robust and secure to DDoS
attacks.
| Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/18777 |
| Date | January 2019 |
| Creators | Sangodoyin, Abimbola O. |
| Contributors | Awan, Irfan U., Hu, Yim Fun, Pillai, Prashant |
| Publisher | University of Bradford, Faculty of Engineering and Informatics |
| Source Sets | Bradford Scholars |
| Language | English |
| Detected Language | English |
| Type | Thesis, doctoral, PhD |
| Rights | <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/"><img alt="Creative Commons License" style="border-width:0" src="http://i.creativecommons.org/l/by-nc-nd/3.0/88x31.png" /></a><br />The University of Bradford theses are licenced under a <a rel="license" href="http://creativecommons.org/licenses/by-nc-nd/3.0/">Creative Commons Licence</a>. |
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