Monitoring Certificate Expiration Date for a Website

Last modified on May 14, 2021

HTTPS websites use SSL certificates to secure connections between users’ browsers and the website. SSL certificates are time-limited. AlertSite can help you check your certificate expiration date and notify you up to 30 days before your certificate expires.

To monitor your certificate expiration date, configure a website monitor with the Report Expired SSL Certificates option:

AlertSite UXM

  1. If you do not have a URL monitor for your website yet, create one as explained in Creating a Single URL Monitor. Make sure to specify the URL beginning with https:// and not http://.

  2. Open the monitor settings and switch to the Advanced tab.

  3. Select the desired value for the Report Expired SSL Certificates option:

    • When Expired
    • 1 Day Before Expiration
    • 2 Days Before Expiration
    • 7 Days Before Expiration
    • 15 Days Before Expiration
    • 30 Days Before Expiration
    • 60 Days Before Expiration
    The Report Expired SSL Certificates option

    Click the image to enlarge it.

  4. Click Save.

AlertSite 1.0

  1. If you do not have a Secure Web Site monitor for your website yet, create one as explained in Creating a Single URL Monitor. Make sure to specify the URL beginning with https:// and not http://.

  2. Open the monitor settings. To do that, navigate to Configure > Sites and click your monitor on the list.

  3. Select the desired value for the Report Expired SSL Certificates option:

    • When Expired

    • 1 Day Before Expiration

    • 2 Days Before Expiration

    • 7 Days Before Expiration

    • 15 Days Before Expiration

    • 30 Days Before Expiration

    • 60 Days Before Expiration

    The 'Report Expired SSL Certificates' option

    Click the image to enlarge it.

  4. Click Submit in the top right corner.

Notes

  • The X Days Before Expiration options send an alert only once. The When Expired option sends alerts on every run when an expired certificate is found and stops sending alerts after the certificate has been updated.

  • Private Node Server versions prior to 3.1 handle the 60 Days option as 30 Days. That is, the alert from those private locations will be sent 30 days (not 60 days) before the certificate expiration.

  • If you do not see the Report Expired SSL Certificates option, it means the monitor is not a URL monitor – for example, it is a real-browser monitor or API endpoint monitor. You need a URL monitor to check the certificate expiration date.

See Also

Website Monitor Settings
Website Monitoring

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