SSL Install Check ​

With the SSL Install Check Tool you can easily check a certificate installed on a web server. The certificate is retrieved via an HTTP call like a browser.

In addition to checking the returned certificate, the following points are checked.

HTTPS Redirect ​

The check checks whether the web server responds with an HTTP status code 302 when the web server is accessed via http://. If a redirect exists, it must also be redirected. If a redirect exists, it must also redirect to https://.

Redirection certificate ​

If the web server has set up a redirect to https://, the certificate returned there is checked. This certificate must match the certificate and https://. This is determined by the serial number.

CAA Record ​

The DNS zones belonging to the entered domain name are searched for a CAA record. If no CAA record is available or if more than one is configured, this is displayed as a message. The query of the DNS zones is done by the Google DNS server.

In addition to the checks, further information about the stored certificate is displayed. For example, the validity can be checked via the notAfter date. Via the serial number it can be recognized whether the server delivers the correct certificate.

In addition, the certificate chain and the supported TLS versions are displayed.