Linux Firewalls, Third Edition

Filesystem Integrity Defined

Maintaining system integrity is yet another layer of security meant to give you, the security administrator, a warm, fuzzy feeling. For the purposes of this chapter, the term filesystem integrity refers to the verifiable knowledge that the computer system and the objects contained therein are in a known-good state. Although that's a wide definition, filesystem integrity in this chapter will simply entail verification that the files located on the computer have not been tampered with or altered. As such, this chapter concentrates on tools to assist you in checking the files.

Practical Filesystem Integrity

Various tools are available to check the integrity of files on the system. Tripwire is a commercial offering in ...