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.
####Key features
- Clear output: you can tell easily whether anything is good or bad
- Ease of installation: It works for Linux, Darwin, FreeBSD and MSYS2/Cygwin out of the box: no need to install or configure something, no gems, CPAN, pip or the like.
- Flexibility: You can test any SSL/TLS enabled and STARTTLS service, not only webservers at port 443
- Toolbox: Several command line options help you to run YOUR test and configure YOUR output
- Reliability: features are tested thoroughly
- Verbosity: If a particular check cannot be performed because of a missing capability on your client side, you'll get a warning
- Privacy: It's only you who sees the result, not a third party
- Freedom: It's 100% open source. You can look at the code, see what's going on and you can change it.
- Heck, even the development is open (github)
####General
Here in the master branch you find the development version of the software -- with new features and maybe some bugs. For the stable version and a more thorough description of the command line options please see testssl.sh.
testssl.sh is working on every Linux/BSD 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 other unixoid system out of the box, supposed they have /bin/bash and standard tools like sed and awk installed. MacOS X and Windows (using MSYS2 or cygwin) work too. OpenSSL version >= 1 is a must. OpenSSL version >= 1.0.2 is needed for better LOGJAM checks and to display bit strengths for key exchanges.
####Current Development
Planned features in the release 2.7dev/2.8 are:
https://github.com/drwetter/testssl.sh/milestones/2.7dev%20%282.8%29
Done so far:
- Trust chain check against certificate stores from java, linux (system), microsoft, mozilla (works for openssl >=1.0.2)
- IPv6 (status: 80% working, details see drwetter#11
- works on servers requiring a x509 certificate for authentication
- SSL Session ID check
- avahi/mDNS based name resolution
- HTTP2/ALPN protocol check
- Logging to a file / dir
- Logging to JSON + CSV
- check for multiple server certificates
- browser cipher simulation
- assistance for color-blind users
- Even more compatibilty improvements for FreeBSD, RH-ish and F5 systems
- OpenSSL 1.1.0 compliant
Contributions, feedback, also bug reports are welcome! For contributions please note: One patch per feature -- bug fix/improvement. Please test your changes thouroughly as reliability is important for this project.
Please file bug reports @ https://github.com/drwetter/testssl.sh/issues .
Update notification here or @ twitter.
Please address questions not specifically to the code of testssl.sh to the respective projects