What rights should be set on the server?

Question

Information Security

Hello. What rights are more correct to set on folders/files? Website in HTML, without an engine ...

Answer 1

644 for regular files
755 for directories and executables

Answer 2

Set it to read only, make root the owner.

Answer 3

Three commands for perfect safety in a vacuum

chown -R root:root /
chmod -R 700  /
chattr -iR + /