File modification monitoring with checksums
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Just did it (thanx to NetXMS team advices).
To monitor some file for changes (like /etc/passwd file):
- Add DCI File.Hash.CRC32(/path/to/file)
- Create event template (something like "Contents of %6 changed").
- Add threshold "diff with previous value" (1 sample) not equal (!=) to 0 to generate this event.
- Don't forget to put file name to Instance field.
This should work fine also for MD5 and SHA1 hashes, as string comparison return -1,0,1, so !=0 will do the same trick.
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