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Installing and Configuring AIDE

In this lab, we will install the Advanced Intrusion Detection Environment (AIDE) and configure it to monitor directories and applications for changes. We will also set up a cron job to run a daily check using AIDE. *This course is not approved or sponsored by Red Hat.*

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Path Info

Level
Clock icon Intermediate
Duration
Clock icon 30m
Last updated
Clock icon Aug 26, 2025

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Table of Contents

  1. Challenge

    Install and configure AIDE

    1. Install AIDE:

      yum install -y aide

    2. Initialize AIDE:

      /usr/sbin/aide --init

    3. Copy initialized database to production:

      cp /var/lib/aide/aide.db.new.gz /var/lib/aide/aide.db.gz

  2. Challenge

    Configure AIDE to run every day at 1 AM

    1. Create a cronjob to run aide --check at 1 AM daily:

      nano /etc/crontab

      0 1 * * * /usr/sbin/aide --check

  3. Challenge

    Define directories and applications to monitor

    1. Define directories to monitor:

      nano /etc/aide.conf

      /patient-data    DIR
/accounting     DIR

    2. Add an application to monitor each time it's accessed:

      nano /etc/aide.conf

      APP_ACCESS = a
/applications/payroll   APP_ACCESS

  4. Challenge

    Update the AIDE database with new directory and application statuses

    1. Update the AIDE database (because we made changes to the /etc/aide.conf file):

      /usr/sbin/aide --update

      cp /var/lib/aide/aide.db.new.gz /var/lib/aide/aide.db.gz
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