Diffie-Hellman Key Exchange is a way to securely share encryption keys publicly between two parties. It's used in TLS and SSL connections to provide Perfect Forward Secrecy. Unfortunately, the default DH parameters distributed with applications are susceptible to a downgrade attack.
debops.dhparam Ansible role will generate a set of strong
Diffie-Hellman parameters on the Ansible Controller, which will be preseeded on
remote hosts, and will be ready to use by other applications. A separate script
can then be used on remote hosts in the background to generate new random DH
parameters, either once or in regular intervals.
This role requires at least Ansible
v2.1.4. To install it, run:
ansible-galaxy install debops.dhparam