Firewall your applications with AppArmor
Traditional methods of securing a computer have revolved around controlling access to critical services. So, if you need to secure network applications, you need to police network traffic. But security vendors are realizing that securing a computer, in effect, boils down to protecting the applications instead. Novell's AppArmor is designed with just this is mind.
One would assume defending applications is as easy as guarding the whole gamut of services running on a network attached computer. But applications these days are complex and intertwined, sharing libraries and files scattered all over the disk. More importantly, Discretionary Access Control (DAC) allows a program to run with the permissions of the user executing it, which introduces the possibility of exploiting a defect in the application to gain super user privileges.
With AppArmor, the idea is to defend individual applications against such threats by restricting their access to only the necessary files and libraries. Simply put, it allows one to lock down an application and the files to be accessed with absolute path names, followed by the common read and write access modes.
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