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Tools and Methods for Managing Snort Sensors in Distributed Environments

Explore tools and methods for effectively managing Snort sensors in distributed environments to monitor and detect 'Bad Traffic' efficiently while overcoming operational challenges.

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Tools and Methods for Managing Snort Sensors in Distributed Environments

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  1. Tools and Methods for Managing Snort Sensors in Distributed Environments Scott Pack, Ed Carter | May 16, 2012

  2. Ohio University

  3. Information Security Office • Three teams • Assessments, Awareness, and Business Continuity • Identity and Access Management • Architecture and Response • Security Monitoring, Forensics, Vulnerability Management, Architecture Reviews, IR, etc.

  4. Problem How can we monitor the network for the ‘Bad Traffic’ given analyst time and financial constraints?

  5. Hardware

  6. Software • RedHat Enterprise Linux • Snort • Cobbler • Puppet • Daemonlogger • PulledPork

  7. Environment • 29 sensors • ~1.5Gbps daily average • ~5000 alerts/day • 9840 Rules in Use

  8. Monitoring • Spectrum • Cacti • Puppet-Dashboard

  9. Lessons • Tuning is a nightmarish necessity. • Data output requires in-depth analysis to be most useful. • Sensor location is complicated. • Large up-front time investment in research/development. • Unintended network troubleshooting tool.

  10. Future Growth • Expand out to all buildings/networks. • Trigger sanctions based on IDS alerts.

  11. Resources • Snort - http://snort.org/ • Puppet - http://puppetlabs.com/ • Cobbler - http://cobbler.github.com/ • Cacti - http://www.cacti.net/ • Daemonlogger - http://www.snort.org/snort-downloads/additional-downloads#daemonlogger • PulledPork - http://code.google.com/p/pulledpork/

  12. THANK YOU

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