Título
Different approaches for the detection of SSH anomalous connectionsAutor-a
Otras instituciones
Instituto Tecnológico de Castilla y LeónUniversidad de Burgos
Universidad de Salamanca
Versión
Postprint
Derechos
© Oxford Academic 2016Acceso
Acceso abiertoVersión del editor
https://doi.org/10.1093/jigpal/jzv047Publicado en
Logic Journal of the IGPL Vol. 24. Nº 1. Pp. 104–114. February, 2016Primera página
104Última página
114Editor
Oxford AcademicPalabras clave
Secure Shell Protocol
SSH
Honeynet
Intrusion Detection ... [+]
SSH
Honeynet
Intrusion Detection ... [+]
Secure Shell Protocol
SSH
Honeynet
Intrusion Detection
Classifier
Ensemble
Cross-Validation [-]
SSH
Honeynet
Intrusion Detection
Classifier
Ensemble
Cross-Validation [-]
Resumen
The Secure Shell Protocol (SSH) is a well-known standard protocol, mainly used for remotely accessing shell accounts on Unix-like operating systems to perform administrative tasks. As a result, the SS ... [+]
The Secure Shell Protocol (SSH) is a well-known standard protocol, mainly used for remotely accessing shell accounts on Unix-like operating systems to perform administrative tasks. As a result, the SSH service has been an appealing target for attackers, aiming to guess root passwords performing dictionary attacks or to directly exploit the service itself. To identify such situations, this article addresses the detection of SSH anomalous connections from an intrusion detection perspective. The main idea is to compare several strategies and approaches for a better detection of SSH-based attacks. To test the classification performance of different classifiers and combinations of them, SSH data coming from a real-world honeynet are gathered and analysed. For comparison purposes and to draw conclusions about data collection, both packet-based and flow data are analysed. A wide range of classifiers and ensembles are applied to these data, as well as different validation schemes for better analysis of the obtained results. The high-rate classification results lead to positive conclusions about the identification of malicious SSH connections. [-]
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