Hash signatures for the /etc files are not reviewed monthly.
Several files within ESX Server should be checked for file system integrity periodically. These files have been deemed critical by VMware in maintaining file system integrity. System administrators must ensure these files have the correct permissions and have not been modified. To ensure integrity, system administrators will use a FIPS 140-2 hash algorithm to create signatures of these files and store them offline. Comparing these hash values periodically will verify the integrity of the files.