A packet filtering firewall, designed to regulate incoming and outgoing packets from a network or an operating system, is akin to security personnel guarding the entrance to a commercial or residential property. Such a system has very little authority, unless given additional powers, in what applications inside the operating system or network are able to do.

If you want to secure your server using AppArmor, you have to create and modify the profiles for all the applications you use. This can easily be done using the YaST AppArmor modules or the command-line tools.