| Publisher | Fidelis Security Systems | ||
|---|---|---|---|
| Format | 247.6KB PDF | Date added | 22 Sep 2002 |
| Topics | Network Security, Security Tools, Intrusion Detection Systems | ||
| Downloads | 91 | ||
This paper developed an optimizing compiler for intrusion detection rules popularized by an open-source Snort Network Intrusion Detection System (www.snort.org). While Snort and Snort-like rules are usually thought of as a list of independent patterns to be tested in a sequential order, the paper demonstrates that common compilation techniques are directly applicable to Snort rule sets and are able to produce high-performance matching engines. SNORTRAN combines several compilation techniques, including cost-optimized decision trees, pattern matching precompilation, and string set clustering. Although all these techniques have been used before in other domain-specific languages, one believes their synthesis in SNORTRAN is original and unique.
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