Check SSL services for vulnerabilities and known weak ciphers with this online SSL Scan. Makes use of sslyze, OpenSSL libraries and Nmap NSE scripts to determine the certificate details and implementation SSL/TLS service.
There are known vulnerabilities and cryptographic weakness with certain SSL implementations such as SSLv2 and 40 bit ciphers. This test enables a service to be easily tested for known security problems with the configuration.
Detect weak or vulnerable SSL services such as HTTPS
Test SSL/TLS configuration errors that can have serious security implications
Identify weak ciphers and use of SSLv2
Get full details of certificates.
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About the Online SSL Scan and Certificate Check
SSL (and TLS) provide encrypted communication layer over the network between a client and a service. The most commonly thought of service is web browsers connecting to a web server with HTTPS, but can also be Email (SMTP / POP) or other protocol. A large number of vulnerabilities have been discovered in different implementations of these encrypted protocols. An example is SSLv2 that has known vulnerabilities and it is recommended that it no longer be used. PCI compliance requires that SSL not actually be used with newer and more secure TLSv1.2 and TLSv1.3 protocols becoming the standard.
As mentioned SSL/TLS can be used for any TCP based service such as FTP, NNTP, SMTP or even Virtual Private Networks (VPN). For general computer users awareness has increased so they might check for the "padlock" in the browser status bar when browsing secure sites such as Internet banking and email. However, many users will not be stopped by certificate warnings in the browser and will simply click past the warning. For this reason popular browsers such as Firefox and Chrome have made it more difficult to bypass SSL/TLS browser warnings.
The primary benefit of transport layer security is the protection of web application data from unauthorized disclosure and modification when it is transmitted between clients (web browsers) and the web application server, and between the web application server and back end and other non-browser based enterprise components.
OWASP Transport Layer Protection Cheat Sheet
Using sslyze and Nmap NSE scripts this online SSL scan will test SSL/TLS enabled IP or web address and gather details of the certificate that is being used. You can use the sslyze option to test any SSL/TLS enabled service on any port. Weak ciphers and known cryptographic vulnerabilities such as the famous Heartbleed are all tested. As are other SSL/TLS attacks from recent years including BEAST, CRIME, BREACH, DROWN, FREAK and POODLE <- nice work on the naming, I guess the marketing team has taken over vulnerability naming!