Free SSL checkers are online tools that allow you to verify the SSL certificate of a website.
These tools can check if the SSL certificate is installed correctly if major web browsers trust it, and if there are any common issues with the certificate.
Examples of free SSL checkers include SSL Shopper, SSL Labs, and DigiCert SSL Installation Diagnostics Tool.
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SSL Checker Online
Online SSL checkers are web-based tools that provide a quick and easy way to verify the SSL certificate of a website.
They can provide information about the certificate issuer, its validity period, and the domains covered.
They can also identify any issues with the certificate or its installation that could prevent a secure connection.
Check SSL Certificate Open SSL
OpenSSL is a software library that creates, manages, and verifies SSL certificates. To check an SSL certificate using OpenSSL, you can use the ‘openssl s_client’ command followed by the server name.
This will display the server’s SSL certificate and chain of trust and can help identify any issues with the certificate or its configuration.
How to Check SSL Certificate in Linux
You can check an SSL certificate using the ‘openssl’ command-line tool in Linux. You can view the server’s SSL certificate and chain of trust using the ‘openssl s_client’ command followed by the server name.
This can help you verify the certificate’s validity, issuer, and other essential details.
SSL Chain Checker
An SSL chain checker is a tool that verifies the chain of trust for an SSL certificate. The chain of faith refers to the series of certificates that link an individual SSL certificate to a trusted root certificate.
By verifying the chain of trust, an SSL chain checker can help ensure that web browsers trust a website’s SSL certificate.
SSL Cipher Test Tool Windows
An SSL cipher test tool for Windows can be used to check which SSL/TLS cipher suites a server supports. Tools like Nmap and TestSSLServer are examples of SSL cipher test tools.
These tools can help identify any weak or insecure cipher suites that a server supports, which attackers could potentially exploit.
DigiCert SSL Checker
The DigiCert SSL Checker is a free tool that checks a website’s SSL certificate.
It can verify if the SSL certificate is installed correctly, if major web browsers trust it, and if there are any issues with the certificate.
The DigiCert SSL Checker can also check the chain of trust for the SSL certificate.
Check SSL Certificate Expiration Date
If you want to know when your SSL certificate will expire, you can use an online SSL checker or a command-line tool like OpenSSL.
These tools will show you the certificate’s validity period, including the issue and expiration dates.
Regularly checking the expiration date of your SSL certificate is essential to prevent connection errors for website visitors.
Conclusion
SSL checkers and related tools are essential for managing and troubleshooting SSL certificates.
They can provide valuable information about an SSL certificate and its configuration and can help identify any issues that could affect the security of a website.
Whether using a free online SSL checker, a command-line tool like OpenSSL, or a specialized tool like an SSL chain checker or cipher test tool, these resources can help ensure your website’s SSL certificate is correctly installed, valid, and secure.