RT Book, Section T1 Trends, problems and misconceptions on testing Network Intrusion Detection Systems effectiveness A1 Orfila Díaz-Pabon, Agustín A1 Estévez Tapiador, Juan Manuel A1 Ribagorda Garnacho, Arturo AB Network Intrusion Detection Systems (NIDS) are hardware or software systems that are used to identify and respond to intrusions in computer networks. An intrusion is a deliberate or accidental unauthorized access to or activity against any of the elements of the network. Evaluation of how effective different intrusion detection technologies are becomes mandatory, in order to know which is the one that better fits in a particular scenario. Nevertheless this is not an easy task. This chapter reviews the main problems regarding testing effectiveness: the absence of standard test methodologies and metrics, the drawbacks of current datasets, the different requirements for testing different technologies, etc. These conditions make evaluation difficult not only for the industry but also for researchers. Scientific proposals are often näively compared. We focus on providing evidence of this situation by means of supporting examples. Some guidelines for the future are finally proposed. PB Nova Publishers SN 978-1-60692-781-6 YR 2009 FD 2009 LK https://hdl.handle.net/10016/14479 UL https://hdl.handle.net/10016/14479 LA eng DS e-Archivo RD 19 may. 2024