Testing TLS/SSL encryption anywhere on any port
testssl.shis 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.
This software is free. You can use it under the terms of GPLv2, see LICENSE.
Attribution is important for the future of this project -- also in the internet. Thus if you're offering a scanner based on testssl.sh as a public and/or paid service in the internet you are strongly encouraged to mention to your audience that you're using this program and where to get this program from. That helps us to get bugfixes, other feedback and more contributions.
Testssl.sh is working on every Linux/BSD distribution out of the box. Latest by 2.9dev most of the limitations of disabled features from the openssl client are gone due to bash-socket-based checks. As a result you can also use e.g. LibreSSL or OpenSSL >= 1.1.1 . testssl.sh also works on other unixoid systems out of the box, supposed they have
/bin/bash>= version 3.2 and standard tools like sed and awk installed. An implicit (silent) check for binaries is done when you start testssl.sh . System V needs probably to have GNU grep installed. MacOS X and Windows (using MSYS2, Cygwin or WSL) work too.
Update notification here or @ twitter.
You can download testssl.sh branch 3.1dev just by cloning this git repository:
git clone --depth 1 https://github.com/drwetter/testssl.sh.git
cdto the directory created (=INSTALLDIR) and run it off there.
Testssl.sh has minimal requirements. As stated you don't have to install or build anything. You can just run it from the pulled/cloned directory. Still if you don't want to pull the GitHub repo to your directory of choice you can pull a container from dockerhub and run it:
docker run --rm -ti drwetter/testssl.sh
Or if you have cloned this repo you also can just
cdto the INSTALLDIR and run
docker build . -t imagefoo && docker run --rm -t imagefoo example.com
For more please consult Dockerfile.md.
We're currently in the development phase, version 3.1dev. 3.1dev will eventually become 3.2. Bigger features are developed in a separate branch before merged into 3.1dev to avoid hiccups or inconsistencies. Albeit we try to keep 3.1dev as solid as possible things will certainly change in 3.1dev. Think of the 3.1dev branch like a rolling release. So if you need stability the 3.0 branch is better for you.
Version 3.0.X receives bugfixes, labeled as 3.0.1, 3.0.2 and so on. This will happen until 3.2 is released.
Support for 2.9.5 has been dropped. Supported is >= 3.0.x only.
Bug reports are important. It makes this project more robust.
Please file bugs in the issue tracker @ GitHub. Do not forget to provide detailed information, see template for issue, and further details @ https://github.com/drwetter/testssl.sh/wiki/Bug-reporting. Nobody can read your thoughts -- yet. And only agencies your screen ;-)
You can also debug yourself, see here.
Please address questions not specifically to the code of testssl.sh to the respective projects below.