# SSL & TLS

# Design

# Operation

# Trobleshooting

# Links & Tools



# SSL/TLS Testing Tools

### Tools for checking SSL/TLS

Below are my favorite tools to check SSL/TLS stuff

<table border="1" id="bkmrk-link-description-htt" style="width: 100%;"><tbody><tr><td style="width: 29.553%;">##### Link

</td><td style="width: 70.447%;">##### Description

</td></tr><tr><td style="width: 29.553%;">[https://badssl.com/](https://badssl.com/)</td><td style="width: 70.447%;">`badssl.com` is meant for *manual* testing of security UI in web clients.

If you want to see client certification authentication in action, use the following:  
In order for this test to work you must first install the client certificate on to your system (get it here: [Certificate Downloads — badssl.com](https://badssl.com/download/)).

After you install the certificate, visit [https://client.badssl.com/](https://client.badssl.com/) at which point you should be prompted to select a certificate that you’d like to authenticate with. Your only option should be the certificate you have just installed.

</td></tr><tr><td style="width: 29.553%;">[https://www.ssllabs.com/ssltest/](https://www.ssllabs.com/ssltest/)</td><td style="width: 70.447%;">This free online service performs a deep analysis of the configuration of any SSL web server on the public Internet.

</td></tr><tr><td style="width: 29.553%;">[https://www.howsmyssl.com/](https://www.howsmyssl.com/)</td><td style="width: 70.447%;">How's My SSL? is a cute little website that tells you how secure your [TLS client](https://www.howsmyssl.com/s/about.html#tls-vs-ssl) is. TLS clients just like the browser you're reading this with.

</td></tr></tbody></table>