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Extranet Security
KTH, Superseded Departments, Teleinformatics. (CCSlab)
1998 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This paper is a report of a 20 point Exam Project concerning security systems intended for Extranets. It describes different kind of security solutions using authentication, encryption, firewalls and vaults that could be set up in companies. In the end, this report presents with a recommendation for the consulting company MIJADA Sverige AB about which security system they should choose to implement in their network.

SSL is widely used and gives strong encryption and authentication through certificates. IPSec is not yet spread over a large market, but it offers a very flexible solution. Kerberos has great security mechanisms, but requires a lot of work and can be pretty hard to implement in an Extranet. S-HTTP conquers with SSL about security on the web market. Since it is intended for web traffic only, it is not an alternative for MIJADA to chose. PGP have very strong security mechanisms and overcomes the United States export laws, but to implement it implies also an own implementation of a protocol stack, which requires a large amount of extra time.

The recommendation that this paper present for MIJADA is to choose SSL as underlying security technology, since it is most flexible and offers the best way to achieve mobility, i.e., allowing users to login to the Extranet from different computers. Furthermore, this paper recommends employing firewalls on both sides of the server running the SSL security component. One of them protects the server from being tampered, and the other protects the Extranet from harmful data that in somehow has passed the server. According to this paper, this is the most suitable solution for MIJADA to secure their Extranet.

Place, publisher, year, edition, pages
1998. , 53 p.
National Category
Communication Systems
URN: urn:nbn:se:kth:diva-95473OAI: diva2:528538
Subject / course
Educational program
Master of Science in Engineering - Electrical Engineering
1998-10-08, Seminar room "Telegrafen", Isafjordsgatan 22, Kista, 13:00 (Swedish)
Available from: 2012-06-15 Created: 2012-05-25 Last updated: 2013-09-09Bibliographically approved

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Mäkelä, Sami
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