Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Conference Papers Conference Paper Faculty Publications- Conference Papers Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Captcha-Based Defense Mechanism to Prevent DoS Attacks Subject The topic of the resource Authentication; Captcha-based mechanism; DoS attack; Network topology; Security threat Description An account of the resource The denial of service (DoS) attack, in the current scenario, is more vulnerable to the banking system and online transactions. Conventional mechanism of DoS attacks consumes a lot of bandwidth, and there will always be performance degradation with respect to the traffic in any of the communication networks. As there is an advent over the network bandwidth, in the current era, DoS attacks have been moved from the network to servers and API. An idea has been proposed which is CAPTCHA-based defense, a purely system-based approach. In the normal case, the protection strategy for DDoS attacks can be achieved with the help of many session schedulers. The main advantage is to efficiently avoid the DoS attacks and increase the server speed as well as to avoid congestion and data loss. This is majorly concerned in a wired network to reduce the delays and to avoid congestion during attacks. 2021, The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. Creator An entity primarily responsible for making the resource Muneeswari G.; Puthussery A. Source A related resource from which the described resource is derived Lecture Notes in Networks and Systems, Vol-176 LNNS, pp. 1-10. Publisher An entity responsible for making the resource available Springer Science and Business Media Deutschland GmbH Date A point or period of time associated with an event in the lifecycle of the resource 2021-01-01 Identifier An unambiguous reference to the resource within a given context <a href="https://doi.org/10.1007/978-981-33-4355-9_1" target="_blank" rel="noreferrer noopener">https://doi.org/10.1007/978-981-33-4355-9_1</a> <br /><br /><a href="https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107365802&amp;doi=10.1007%2F978-981-33-4355-9_1&amp;partnerID=40&amp;md5=4c60d2e9a7deadb2ad2e570f9faf7fd1" target="_blank" rel="noreferrer noopener">https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107365802&amp;doi=10.1007%2f978-981-33-4355-9_1&amp;partnerID=40&amp;md5=4c60d2e9a7deadb2ad2e570f9faf7fd1</a> Rights Information about rights held in and over the resource Restricted Access Relation A related resource ISSN: 23673370; ISBN: 978-981334354-2 Format The file format, physical medium, or dimensions of the resource Online Language A language of the resource English Type The nature or genre of the resource Conference paper Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Muneeswari G., Department of Computer Science and Engineering, School of Engineering and Technology, CHRIST (Deemed to be University), Bangaluru, India; Puthussery A., Department of Computational Sciences, School of Science, CHRIST (Deemed to be University), New Delhi, India