GitHub Enterprise uses a self-signed certificate when it is first started. You should configure TLS to use a certificate that is signed by a certificate authority that is trusted by web browsers.

  1. Access the Management Console.

  2. At the top of the Management Console, click Settings. Settings tab

  3. In the left sidebar, click Privacy. Privacy sidebar

  4. Select SSL only (recommended). SSL only checkbox

  5. Under Install SSL Certificate (replace existing), click Choose File. SSL Certificate file browser

  6. Choose an SSL certificate or certificate chain (in PEM format) to install. This file will usually have a .pem, .crt, or .cer extension.
  7. Under Install SSL Key (replace existing), click Choose File. SSL Key file browser

  8. Choose an SSL key (in PEM format) to install. This file will usually have a .key extension.

    Warning: Your SSL key must not have a passphrase! For more information, see "Removing the passphrase from your key file".