We strongly recommend that you use SSL for your Polyaxon deployment.
All Polyaxon PaaS come with automatic SSL enabled by default and require no setup of any kind.
If you use our Polyaxon CE or Polyaxon EE hosted on your cluster; you will need to Configure an SSL yourself.
Let's Encrypt allows you to provision a new SSL certificate.
N.B.: You can, of course, only setup SSL if you have a properly configured domain name. Let's Encrypt will not be able to provision a certificate for any Polyaxon deployment which is running locally, or on an IP address.