SSLyze

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SSLyze is a Python library and a CLI tool that can analyze the SSL configuration of a server by connecting to it. It is designed to be fast and comprehensive, and should help organizations and testers identify mis-configurations affecting their SSL/TLS servers.
Key features include:

• Fully documented Python API, in order to run scans and process the results directly from Python.
• Scans are automatically dispatched among multiple processes, making them very fast.
• Performance testing: session resumption and TLS tickets support.
• Security testing: weak cipher suites, insecure renegotiation, CRIME, Heartbleed and more.
• Server certificate validation and revocation checking through OCSP stapling.
• Support for StartTLS handshakes on SMTP, XMPP, LDAP, POP, IMAP, RDP, PostGres and FTP.
• Support for client certificates when scanning servers that perform mutual authentication.
• Scan results can be written to an XML or JSON file for further processing.
• And much more!

Getting started

SSLyze can be installed directly via pip:

Code:
pip install --upgrade setuptools
pip install sslyze

sslyze --regular www.yahoo.com:443 www.google.com "[2607:f8b0:400a:807::2004]:443"

It is also easy to directly clone the repository and the fetch the requirements:

Code:
git clone https://github.com/nabla-c0d3/sslyze.git
cd sslyze
pip install -r requirements.txt --target ./lib
python -m sslyze --regular www.yahoo.com:443 www.google.com "[2607:f8b0:400a:807::2004]:443"

On Linux, the python-dev package needs to be installed first so that the nassl C extension can be compiled:

Code:
sudo apt-get install python-dev