If you have set the JetBrains Gateway as your default editor, then the Gateway will launch automatically when you open a codespace from {% data variables.product.prodname_dotcom_the_website %}. 

If the JetBrains Gateway is not your default editor, you can still open a codespace in JetBrains by going to the "Your codespaces" page at [github.com/codespaces](https://github.com/codespaces) and clicking the ellipsis (...) to the right of the codespace you want to open. For more information, see "[Opening an existing codespace](/codespaces/developing-in-codespaces/opening-an-existing-codespace?tool=webui)."

Alternatively, you can also open the JetBrains Gateway and select an existing codespace, as described in the following procedure.

1. Open the JetBrains Gateway application.
1. Click **Connect to {% data variables.product.prodname_codespaces %}**.

   ![Screenshot of the JetBrains Gateway initial view](/assets/images/help/codespaces/jetbrains-gateway-connect.png)

1. In the "Your Codespaces" list, click the codespace you want to work in.

   ![Screenshot of the JetBrains Gateway codespace list](/assets/images/help/codespaces/jetbrains-gateway-codespaces.png)

1. In the "Available IDEs" list, click the JetBrains IDE you want to use. The Gateway will remember your choice the next time you connect to a codespace.

   ![Screenshot of the JetBrains Gateway codespace list](/assets/images/help/codespaces/jetbrains-gateway-ides.png)

1. Click **Connect**.

   {% note %}

   **Note**: _If you are running a firewall:_ the first time you connect to a remote resource, you may be prompted to allow the JetBrains Gateway to communicate across your network.

   {% endnote %}