- Test for Heartbleed Vulnerability
- Get details of a SSL certificate.
- Detect weak ciphers and SSLv2, a version of SSL with known security vulnerabilities.
About SSL Certificate Checking
SSL (and TLS) provide encrypted communication over the Internet, SSL 2.0 has known vulnerabilities and it is recommended that it no longer be used. PCI compliance for example also mandates that the version SSL 2.0 not be used and the version must be SSL 3.0.
While it can be used for any TCP based service such as FTP, NNTP, SMTP - it is most commonly used to encrypt web traffic. User awareness has become such that non-technical users are aware of the importance of the HTTPS in the URL and the "padlock" in the browser status bar when browsing secure sites such as Internet banking and email.