How To Check Ssl Certificate Expiration Date?
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1. Using the Command Line
The most common way to check an SSL Certificate’s expiration date is to use the command line. This method works on both Linux and Windows.
To begin, open a command prompt or terminal window. Then, use the openssl command to connect to the website or server in question.
For example, to connect to google.com and view its certificate, you would use the following command:
openssl s_client -connect google.com:443
The output should include a section titled “Certificate”. This section will list the expiration date of the certificate.
2. Using a Browser
You can also check an SSL Certificate’s expiration date using your web browser. To begin, navigate to the website in question and click the lock icon in the address bar.
This will open a window that displays information about the website’s SSL Certificate. The expiration date of the certificate should be listed in this window.
3. Using an SSL Checker
Finally, you can use an online SSL Checker to view the expiration date of any website’s SSL Certificate. These tools are available for free and can be used to quickly and easily check the expiration date of any website’s SSL Certificate.