testssl.sh – Test SSL Security Including Ciphers, Protocols & Detect Flaws


testssl.sh is a free command line tool to test SSL security, it checks a server’s service on any port for the support of TLS/SSL ciphers, protocols as well as recent cryptographic flaws and more.

testssl.sh - Test SSL Security Including Ciphers, Protocols & Detect Flaws


testssl.sh is pretty much portable/compatible. It is working on every Linux, Mac OS X, FreeBSD distribution, on MSYS2/Cygwin (slow). It is supposed also to work on any other unixoid systems. A newer OpenSSL version (1.0) is recommended though. /bin/bash is a prerequisite – otherwise there would be no sockets.

Features to Test SSL Security in testssl.ssh

  • 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)

Usage of testssl.sh SSL Security Testing Tool


Similarly there is also:

TLSSLed v1.2 – Evaluate The Security Of A Target SSL Or TLS (HTTPS) Web Server Implementation

You can get testssl.sh here:

Latest zip: testssl.sh-3.0rc2.zip

Or read more here.

Posted in: Security Software

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