`testssl.sh` is a free command line tool which checks a server's service on any port for the support of TLS/SSL ciphers, protocols as well as some cryptographic flaws. It's designed to provide clear output for your "is this good or bad" decision.
It is working on every Linux distribution out of the box with some limitations of disabled features from the openssl client (some workarounds are done with bash socket based checks). It also works on BSD and other Unices out of the box, supposed they have `/bin/bash` and standard tools like sed and awk installed. MacOS X and Windows (using MSYS2) work too.
On github you will find in the master branch the development version of the software -- with new features and maybe some bugs. For the stable version and a more thorough description of the software please see [testssl.sh](https://testssl.sh/ "Go to the site with the stable version and more documentation").
* several tuning parameters on the cmd line (only available through enviroment variables b4): --assuming-http, --ssl-native, --sneaky, --warnings, --color, -- debug, --long
