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Deterministic Finite Automaton for scalable traffic identification: The power of compressing by range

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5 Author(s)
Rafael Antonello ; Federal University of Pernambuco (UFPE), Recife, Brazil ; Stenio Fernandes ; Djamel Sadok ; Judith Kelner
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Deep Packet Inspection (DPI) systems have been becoming an important element in traffic measurement ever since port-based classification was deemed no longer appropriate, due to protocol tunneling and misuses of well-defined ports. Current DPI systems express application signatures using regular expressions and it is usual to perform pattern matching through the use of Finite Automaton (FA). Although DPI systems are essentially more accurate, they are also resource-intensive and do not scale well with link speeds. Looking to this area of interest, this paper proposes a novel Deterministic Finite Automaton, called Ranged Compressed Deterministic Finite Automaton (RCDFA), that compresses transitions without additional memory lookups. Experimental results show that RCDFA yields space savings of 97% over the original DFA and up to 93% better compression when compared to the DFA's state-of-the-art compression techniques.

Published in:

2012 IEEE Network Operations and Management Symposium

Date of Conference:

16-20 April 2012