# SSL Termination

For convenience, a Docker image for SSL termination using NGINX is provided which automatically configures itself with an SSL certificate:

<table><thead><tr><th width="264.3333333333333">Image name</th><th>Base image</th><th>Description</th></tr></thead><tbody><tr><td><a href="/pages/OVgN11MhGSdeszJPGKQo"><code>keeper/guacamole-ssl-nginx</code></a></td><td><a href="https://hub.docker.com/_/nginx"><code>nginx:1.19</code></a></td><td>An instance of NGINX which automatically provides SSL termination for Keeper Connection Manager.<br></td></tr></tbody></table>

This image:

* Is based off Docker's official image for NGINX, and thus each accepts the same core environment variables.
* Accepts a set of Keeper-specific environment variables defining the Guacamole instance that will be behind SSL termination.
* Can automatically retrieve a certificate from Let's Encrypt, generate its own self-signed certificate for testing, or use an existing certificate that you have already obtained from a certificate authority.
* Requires the same `ACCEPT_EULA` environment variable as the [`keeper/guacamole`](/keeper-connection-manager/installation/docker-compose-install/keeper-guacamole.md) and [`keeper/guacd`](/keeper-connection-manager/installation/docker-compose-install/keeper-guacd.md) images.

See the [next section](/keeper-connection-manager/installation/docker-compose-install/ssl-termination/keeper-guacamole-ssl-nginx.md) to view configuration examples.


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