AIX does not accept /bin/false as a valid shell by default. It must be added to
the SHELLS line in /etc/security/login.cfg before running install.sh.
The Windows version of OSSEC is agent only, it cannot work without a server. The key can be obtained from the server using manage_agents.
Tarballs from https://www.ossec.net/download-ossec/
and GitHub Releases ship with a detached
.asc signature file. Import the public key published at
https://www.ossec.net/files/OSSEC-ARCHIVE-KEY.asc,
then run gpg --verify on the tarball before installing.
Full step-by-step commands are in :ref:`install_source` under "Verify the tarball signature".