Title
Flow-Based detection of DNS tunnels
Abstract
DNS tunnels allow circumventing access and security policies in firewalled networks. Such a security breach can be misused for activities like free web browsing, but also for command & control traffic or cyber espionage, thus motivating the search for effective automated DNS tunnel detection techniques. In this paper we develop such a technique, based on the monitoring and analysis of network flows. Our methodology combines flow information with statistical methods for anomaly detection. The contribution of our paper is twofold. Firstly, based on flow-derived variables that we identified as indicative of DNS tunnelling activities, we identify and evaluate a set of non-parametrical statistical tests that are particularly useful in this context. Secondly, the efficacy of the resulting tests is demonstrated by extensive validation experiments in an operational environment, covering many different usage scenarios.
Year
DOI
Venue
2013
10.1007/978-3-642-38998-6_16
Lecture Notes in Computer Science
Keywords
Field
DocType
security breach,anomaly detection,non-parametrical statistical test,security policy,control traffic,detection technique,effective automated dns tunnel,dns tunnelling activity,flow-based detection,statistical method,dns tunnel,network flows,cyber security,informatics
Flow network,Anomaly detection,Computer science,Flow (psychology),Web navigation,Security policy,Statistical hypothesis testing,Distributed computing
Conference
Volume
ISSN
Citations 
7943
0302-9743
13
PageRank 
References 
Authors
0.79
9
6
Name
Order
Citations
PageRank
Wendy Ellens1434.21
Piotr Żuraniewski2262.52
Anna Sperotto357648.30
Harm Schotanus4130.79
Michel Mandjes553473.65
Erik Meeuwissen6506.02