file-integrity monitoring

[Keith Smith]

Hi,

I am in the final steps of an annual Payment Card Industry compliance 
process.  I have two CentOS servers that require file-integrity 
monitoring or change-detection.  I was looking at Tripwire and it is not 
open source which is what I expected it to be and there are some 
complaints of it being difficult to configure, employee turnover, etc.

Thank you in advance for any suggestions.

-- 
Keith Smith