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AUTOMATED FIREWALL RULE SET GENERATION THROUGH PASSIVE TRAFFIC INSPECTION

AUTOMATED FIREWALL RULE SET GENERATION THROUGH PASSIVE TRAFFIC INSPECTION. Georg-Christian Pranschke Supervisor: Barry Irwin Security and Networks Research Group

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AUTOMATED FIREWALL RULE SET GENERATION THROUGH PASSIVE TRAFFIC INSPECTION

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  1. AUTOMATED FIREWALL RULE SET GENERATIONTHROUGH PASSIVE TRAFFIC INSPECTION Georg-Christian Pranschke Supervisor: Barry Irwin Security and Networks Research Group Department of Computer Science Rhodes University

  2. Background Wireshark Tcpdump / Windump ACM Classification System (1998) C.2.0. Security and Protection • Introducing firewalls into existing networks is often problematic • Production traffic cannot be interrupted • Necessitates time consuming manual analysis of network traffic • Ever increasing traffic volumes make manual analysis less feasible AUTOMATED FIREWALL RULE SET GENERATION

  3. Traffic Analyser – Flow Creation AUTOMATED FIREWALL RULE SET GENERATION

  4. High Level Design Overview – System Components AUTOMATED FIREWALL RULE SET GENERATION

  5. Pipeline: bpf -> sql -> scripts -> fwbuilder

  6. Charybdis screencast Scylla screencast

  7. Results / Critical Evaluation AUTOMATED FIREWALL RULE SET GENERATION • Misconfigured firewall provides only the illusion of network security • Imperfect information -> no proof of correctness • “Dancing bears” • HTTP universal firewall traversal protocol -> SQLi

  8. Questions ? AUTOMATED FIREWALL RULE SET GENERATION

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