Mozilla Observatory on a Mac
Graded HTTP header & TLS scan for your own sites (free API) · Security Tools
Mozilla Observatory scans a site and grades it (A+ to F) on the security headers that actually matter; Content-Security-Policy, HSTS, X-Frame-Options, referrer policy, cookie flags; and runs a companion TLS scan on the certificate and cipher configuration. Each finding comes with the specific header to add, so it doubles as a to-do list rather than just a score. Free, no API key required. Scan the sites you host from this Mac or on linked servers; it complements the certificate-expiry monitoring already here, which checks that TLS is *valid* rather than well-configured.
Run Mozilla Observatory with FrontierStack
Install or connect Mozilla Observatory; then check its status, ports and certificate from FrontierStack. The same screen links to firewall checks, Malware Audit and backups where they apply.
Run it from your Mac.
FrontierStack installs, monitors and secures services on this Mac and on linked servers.
Download FrontierStack