Lesson 12

Date: 4/12/2017
Basics of Linux Security
Linux System Administration

System Integrity Checkers

  • IDS: Host based (tripwire) and Network based (Snort).
  • Tripwire (System integrity scanner). Creates a checksum of the system after fresh installation and verifies the it on a regular basis, running through cron.

    GNUtar, tar -d (Check for system modifications)

    For example,
    tar -df DOC.tar DOC
    shows how files in directory DOC are different from the archive:
    Uid differs
    Gid differs
    Mod time differs
    Size differs

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