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IDS data to include in monthly report

I am planning to compile security metics for a monthly report. Included will be statistics from the IDS. My question is: What statistics do I ask the technicians who are monitoring the IDS to provide me?

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You should ask them for information contained in the list below. The IDS team may have all of it, or just act as a group that feeds into another team that does the analysis.

  • Number of alerts, sorted by severity (high, medium, low) and particular probe (You should have a numerical naming structure for all probes to quickly identify where the data is coming from.)
  • Number of high alerts that have been resolved
  • List of high alerts that are still pending investigation, including priorities
  • List of known false positives
  • Planned changes to signature base to deal with false positives and new signature releases
  • Overall network diagram showing placement of IDS probes (This changes frequently, so including it in a monthly report helps you understand where you are getting data from.)

Note that "Number" just means a count. "List" indicates that we want a simple description of each issue.

Hope this helps.


For more information on this topic, visit these other SearchSecurity.com resources:
News & Analysis: Software takes holitic approach to detecting security glitches
Infosec Know IT All Trivia: Intrusion detection
Scheier's Security Product Roundup: Vendors struggle to provide common view of security events


This was first published in January 2003

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