=====Secure Server Builds=====

====Aide====
aide is not included by default with RHEL you will need install it from the install cd

 # rpm -Uvh aide......rpm
  
Generate a new database:
  # /usr/sbin/aide --init
  
By default, the database will be written to the file /var/lib/aide/aide.db.new.gz.
The database, as well as the configuration file /etc/aide.conf and the binary /usr/sbin/aide (or hashes
of these files) should be copied and stored in a secure location. Storing these copies or hashes on read-only
media may provide further confidence that they will not be altered.

Install the newly-generated database:

  # cp /var/lib/aide/aide.db.new.gz /var/lib/aide/aide.db.gz
  
Run a manual check:

  # /usr/sbin/aide --check
  
If this check produces any unexpected output, investigate.

You should implement daily checking 

Edit /etc/crontab and add the following

  # Aide security checknig runs every day at 4:05 AM
  05 4 * * * root /usr/sbin/aide --check