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If Bob tries to access something like /home/Code/TopSecret for example. The system wouldn't allow him to access this without having the permission. I would like to know about these attempts.

Is there a way I can monitor and view these attempts by either modifying auditctl? Or, if it is already being monitored, where would I view these attempts?

Thank you in advance.

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You could try to parse ~/.bash_history for every user: grep -e "$pattern" /home/*/.bash_history

To view their sudo commands: tail /var/log/secure | grep username or tail /var/log/secure | grep "$pattern"

As you figured you can track acces to a path with auditctl. Tried on one of my test systems and this works pretty well and its directlty from the man page:

auditctl -w "$path" -a exit,always -S open -F success=0

Again you should parse the audit.log with grep "$pathoffileorfolder" /var/log/audit/audit.log

Thats about what i would use without installing anything that doesnt come with the distro.

  • +1 for auditctl example. -1 for grepping ~/.bash_history which is too easy for a user to circumvent. man ausearch and man aureport for ways to review audit logs as opposed to grep <pattern> audit.log. – MikeA Nov 1 '16 at 16:48

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