Certman

Certman is a simple certificate manager web service for OpenVPN.

Installation

Binary

There are prebuilt binary files for this application. They are statically linked and have no additional dependencies. Supported plattforms are:

• Windows (XP and up)
• Linux (2.6.16 and up)
• Linux ARM (for raspberry pi, 3.0 and up) Simply download them from the "artifacts" section of this project.

Docker

A prebuilt docker image (10MB) is available:

docker pull docker.klink.asia/paul/certman

From Source-Docker

You can easily build your own docker image from source

docker build -t docker.klink.asia/paul/certman .

Configuration

Certman assumes the root certificates of the VPN CA are located in the same directory as the binary, If that is not the case you need to copy over the ca.crt and ca.key files before you are able to generate certificates with this tool.

Additionally, the project is configured by the following environment variables:

• OAUTH2_CLIENT_ID the Client ID, assigned during client registration
• OAUTH2_CLIENT_SECRET the Client secret, assigned during client registration
• OAUTH2_AUTH_URL the URL to the "/authorize" endpoint of the identity provider
• OAUTH2_TOKEN_URL the URL to the "/token" endpoint of the identity provider
• OAUTH2_REDIRECT_URL the redirect URL used by the app, usually the hostname suffixed by "/login/oauth2/redirect"
• USER_ENDPOINT the URL to the Identity provider user endpoint, for gitlab this is "/api/v4/user". The "username" attribute of the returned JSON will used for authentication.
• APP_KEY random ASCII string, 32 characters in length. Used for cookie generation.
• APP_LISTEN port and ip to listen on, e.g. :8000 or 127.0.0.1:3000