Check the validity period of the TLS certificate submitted by a site.
Steps….
- Use a browser for visual inspection — Open the site security information and then the certificate.
- Check dates — Find the start and end fields.
- Check the name covered — Check that the certificate covers the domain name used.
- Automate if necessary — For many services, use certificate supervision rather than manual control.
Key takeaways
- A valid certificate can still be misconfigured if the intermediate string is incorrect.
- Anticipate renewal instead of waiting for of expiration.