Göran Pulkkis

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This paper gives a topical overview of wireless network security aspects. Security measures taken depend on the different protocols, standards, techniques and systems available. A brief introduction to security protocols, standards and corresponding technologies is given. The essay will concentrate on 2G, 2.5G, 3G and wireless local area networks.(More)
As demand increases for ubiquitous network facilities, infrastructure-less and self-configuring systems like Mobile Ad hoc Networks (MANET) are gaining popularity. MANET routing security however, is one of the most significant challenges to wide scale adoption, with wormhole attacks being an especially severe MANET routing threat. This is because wormholes(More)
Extending state-of-the-art machine learning algorithms to highly scalable (big data) analysis environments is crucial for the handling of authentic datasets in Intrusion Detection Systems (IDS). Traditional supervised learning methods are considered to be too slow for use in these environments. Therefore, we propose the use of Extreme Learning Machine (ELM)(More)
Executive Summary This article presents a virtual course with the topic network security. The course has been produced by Arcada Polytechnic as a part of the production team Computer Networks, Telecommu-nication and Telecommunication Systems in the Finnish Virtual Polytechnic. The article begins with an introduction to the evolution of the information(More)
There are many kinds of systems developed for anonymous communication on the internet. We survey a number of systems and evaluate their security. Among these systems we compare func-tionalities like Onion Routing, anonymous VPN services, probabilistic anonymity, and determin-istic anonymity. Other types of anonymous communication such as messaging,(More)
Traversal time and hop count analysis (TTHCA) is a recent wormhole detection algorithm for mobile ad hoc networks (MANET) which provides enhanced detection performance against all wormhole attack variants and network types. TTHCA involves each node measuring the processing time of routing packets during the route discovery process and then delivering the(More)
This paper presents a virtual learning environment for Mobile IP (Internet Protocol). The learning environment has been produced in a production circle of Virtual Polytechnic of Finland. Protocols and mechanisms for secure mobility in the Internet are surveyed. A detailed description of the development of the learning environment and the content of the(More)
Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online's data policy on reuse of materials please consult the policies page. Abstract Due to the self-configuring nature of a Mobile Ad Hoc Network (MANET), each node must participate in the(More)