Hostilla.pl IT glossary
What is HSTS?
HSTS tells browsers to use HTTPS for a domain after the policy is enabled.
Definition
HSTS tells browsers to use HTTPS for a domain after the policy is enabled.
What does it mean in practice?
In practice, this is part of HTTPS, website trust, secure panels, webmail and automated SSL management on hosting.
A practical Hostilla.pl example
When HTTPS fails, check the requested hostname, certificate names, validity period, chain and DNS before replacing anything. HSTS helps identify whether the fault is in issuance, installation, renewal or browser delivery.
What should you check?
- the exact hostname covered by the certificate
- DNS and validation access for that hostname
- certificate validity, issuer and intermediate chain
- HTTPS redirects, mixed content and automated renewal