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[{"key": "dc.contributor.advisor", "value": "H\u00e4m\u00e4l\u00e4inen, Timo", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.advisor", "value": "Asghar, Muhammad Zeeshan", "language": "", "element": "contributor", "qualifier": "advisor", "schema": "dc"}, {"key": "dc.contributor.author", "value": "Imran, Ayesha", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2017-11-20T12:09:12Z", "language": "", "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2017-11-20T12:09:12Z", "language": "", "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2017", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1792941", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/55934", "language": "", "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Software-Defined Networking (SDN) is essentially varying the way we design and manage networks, which makes a communication network programmable. In SDN, a logically centralized controller has straight control over the packet-handling functions of the network switches, using a standard, open API (Application Programming Interface) such as OpenFlow. OpenFlow is a broadly used protocol for software-defined networks (SDNs) that presents a new model in which the control plane is inattentive from the forwarding plane for the network devices. In SDN approach centralized entities called \"controllers\" perform like network operating systems run dissimilar applications that accomplish and control the network via well-defined APIs. SDN permits network engineers and administrators to reply rapidly to the changing business requirements by determining traffic from the central controller deprived of having to touch the physical switches. They use software to rank, redirect or block traffic globally or in varying degrees down to individual packet levels. In short, SDN can deal with the more protected network if it is properly secured. SDN has the ability to transform the network industry. It is observed that currently enterprises requiring SDN deployment demand, multiple controllers that lead security challenges associated with SDN Controller design. In this thesis, a comprehensive literature review concerning SDN controllers security has been done. We demonstrate a comprehensive study on SDN by clarifying its concept, the OpenFlow protocol architecture and how it works, general benefits and applications of SDN. We also present a discussion on SDN controllers and several threat vectors which may enable for the exploitation of the vulnerabilities of SDN Controllers. This study also focuses on designing a dependable Controller platform including the requirements for a secure, resilient, and robust SDN Controller. The thesis is finalized by discussing that how we can secure SDN controllers by making recommendations for security improvements for future SDN Controllers. The discussion highlights the existing gap between the actual security level of the current SDN Controller design and the potential security solutions.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "SDN-ohjaimet turvallisuusongelmat.\r\n\r\nOhjelmistokohtainen verkkoyhteys (SDN) on olennaisesti eri tavoin suunniteltu ja hallinnoitu verkkoja, mik\u00e4 tekee viestint\u00e4verkon ohjelmoitavaksi. SDN:ss\u00e4 loogisesti keskitetyll\u00e4 ohjaimella on suorat k\u00e4skyt verkkokytkinten pakettik\u00e4sittelytoiminnoista k\u00e4ytt\u00e4en standardia avointa API:ta (Application Programming Interface), kuten OpenFlow. OpenFlow on yleisesti k\u00e4ytetty protokolla ohjelmistoverkkoihin (SDN), jotka esittelev\u00e4t uuden mallin, jossa ohjaustaso ei huomioi verkkolaitteiden v\u00e4litystasoa. SDNapproachkeskusyksik\u00f6iss\u00e4, joita kutsutaan \"ohjaimiksi\", suorittavat samankaltaiset verkko-k\u00e4ytt\u00f6j\u00e4rjestelm\u00e4t\r\nk\u00e4ytt\u00e4v\u00e4t erilaisia sovelluksia, jotka suorittavat verkon ja hallitsevat sit\u00e4 hyvin m\u00e4\u00e4riteltyjen sovellusrajapintojen kautta. SDN sallii verkkoinsin\u00f6\u00f6rit ja yll\u00e4pit\u00e4j\u00e4t vastaamaan nopeasti muuttuviin liiketoiminnan vaatimuksiin m\u00e4\u00e4ritt\u00e4m\u00e4ll\u00e4 liikenteen keskusohjaimelta, joka ei ole joutunut koskettamaan fyysisi\u00e4 kytkimi\u00e4. He k\u00e4ytt\u00e4v\u00e4t ohjelmistoja sijoittamaan, ohjaamaan tai est\u00e4m\u00e4\u00e4n liikennett\u00e4 maailmanlaajuisesti tai vaihtelevasti yksitt\u00e4isten\r\npakettitasojen alapuolella. Lyhyesti sanottuna SDN voi hoitaa suojatun verkon, jos se on asianmukaisesti suojattu. SDN pystyy muuttamaan verkkoalalla. On havaittavissa, ett\u00e4 nyky\u00e4\u00e4n yritykset, jotka vaativat SDN: n k\u00e4ytt\u00f6\u00f6nottoa, tarvitsevat useita ohjaimia, jotka johtavat SDN Controller -suunnitteluun liittyviin turvallisuusongelmiin. T\u00e4ss\u00e4 ty\u00f6ss\u00e4 on tehty kattava kirjallisuuskatsaus SDN-ohjainten turvallisuudesta. Esittelemme kattavia\r\ntutkimuksia SDN: st\u00e4 selkeytt\u00e4m\u00e4ll\u00e4 sen k\u00e4sitett\u00e4, OpenFlow-protokollaarkkitehtuuria ja sen toimivuutta, SDN:n yleisi\u00e4 hy\u00f6tyj\u00e4 ja sovelluksia. Esittelemme my\u00f6s keskustelun SDNohjaimista ja useista uhkaavektoreista, jotka voivat mahdollistaa haavoittuvuuksien hyv\u00e4ksik\u00e4yt\u00f6n\r\nSDN-ohjaimia. T\u00e4m\u00e4 tutkimus keskittyy my\u00f6s luotettavan ohjainlaitteen suunnitteluun, joka sis\u00e4lt\u00e4\u00e4 turvallisen, joustavan ja kest\u00e4v\u00e4n SDN-ohjaimen vaatimukset. Opinn\u00e4ytety\u00f6 viimeistell\u00e4\u00e4n keskustelemalla siit\u00e4, miten voimme turvata SDN-ohjaimet tekem\u00e4ll\u00e4 suosituksia turvallisuuden parantamiseksi tuleville SDN-ohjaimille. Keskustelussa korostuu nykyisen SDN-ohjaimen todellisen suojaustason ja mahdollisten tietoturvaratkaisujen v\u00e4linen ero.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Ayesha Imran (ayimran) on 2017-11-20 12:09:11.313913. Form: Master's Thesis publishing form (https://kirjasto.jyu.fi/publish-and-buy/publishing-forms/masters-thesis-publishing-form). JyX data: [jyx_publishing-allowed (fi) =True]", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija.group@korppi.jyu.fi) on 2017-11-20T12:09:12Z\r\nNo. of bitstreams: 2\r\nURN:NBN:fi:jyu-201711204305.pdf: 1166391 bytes, checksum: 6ff220ef7eba1d16a41466b6699f8c36 (MD5)\r\nlicense.html: 4248 bytes, checksum: 5d2d3ec7855b6b9689612ee07c0176f3 (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2017-11-20T12:09:12Z (GMT). No. of bitstreams: 2\r\nURN:NBN:fi:jyu-201711204305.pdf: 1166391 bytes, checksum: 6ff220ef7eba1d16a41466b6699f8c36 (MD5)\r\nlicense.html: 4248 bytes, checksum: 5d2d3ec7855b6b9689612ee07c0176f3 (MD5)\r\n Previous issue date: 2017", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (62 sivua)", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "OpenFlow-protokolla", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "software defined networking", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "computer networks", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "SDN", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "SDN controllers", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "DoS attacks", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "OpenFlow Controller", "language": null, "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "SDN controllers security issues", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": 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