Installing and Configuring AIDE

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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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Lab Info

Level

Intermediate

Last updated

Aug 26, 2025

Duration

30m

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
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
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
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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