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Show an SSH Login Banner

Security & TLS · easy · solved in-browser (no VM needed) · 3 tiered hints

Write /etc/ssh/sshd_config.d/20-banner.conf that points sshd at a login banner file by setting the Banner directive to /etc/issue.net, and also sets PrintMotd to no so the post-login MOTD is left to PAM instead of being printed twice. (Authored config, graded structurally — the engine isn't run here.)

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