NOTE:
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Gateway-Server-Firewall, or Mail-Server-Firewall, or Web-Server-Firewall files
depending of which one you want to use must be placed under /etc/rc.d/init.d/
directory and renamed "firewall".

   . As an example, command to rename a file is as "root":
     [root@deep init.d]# mv Gateway-Server-Firewall firewall
