Set an Exact File Mode — hands-on lab

Set an Exact File Mode

easy 10 XP ~3 minHands-on lab

A security scan flagged /srv/lab/secure/vault.key as world-writable. Anyone on this host could replace the key.

Task

Set the permissions of /srv/lab/secure/vault.key to exactly 440.
Leave its owner and group unchanged, and do not modify its contents.

About this machine

Ubuntu 24.04 with no internet access. You are student with passwordless sudo. The grader checks the final state of the machine, not the commands you typed. Values like names and ports are generated for you.

chmod permissions

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