# Install and Configure Tunnelblick (macOS)

To access vSphere/NSX-T, you must install Tunnelblick VPN client software on your Mac and establish a VPN connection.

This topic explains how to install and configure the Tunnelblick VPN client software on your Mac to connect to your Private Cloud via VPN.

Tunnelblick is a free graphical user interface for OpenVPN for macOS.

{% hint style="info" %}
**Prerequisites:**

* You have administrator rights.
* You have logged in on your local PC.
  {% endhint %}

{% hint style="warning" %}
**Important:**

In order to use OpenVPN, you must enable the following ports in your router and firewall:

Alternatively, OpenVPN can be used with port 1194 TCP. In this case, you have to enable this port as well.
{% endhint %}

| **Port** | **Protocol** |
| -------- | ------------ |
| 1194     | UDP          |
| 443      | TCP          |

## Download Tunnelblick

Download the [<mark style="color:blue;">VPN client software Tunnelblick</mark>](https://tunnelblick.net).

{% hint style="info" %}
**Note:** We recommend you download the latest stable version.
{% endhint %}

## Install Tunnelblick

1. Open the installation file. The file name of the installation file has the following format:

   `Tunnelblick_x.x.x_build_xxxx.dmg`

   Example: `Tunnelblick_3.8.1_build_5400.dmg`
2. Double click on the **Tunnelblick** app. The following message will be displayed:

   ```
   Tunnelblick.app is an app downloaded from the Internet; do you really want to open it?
   ```
3. Click on **Open**.
4. Enter the password of the administrator account.
5. Click on **I have configuration files**. The window **Add configuration** is being displayed.
6. Click **OK**.

## Download Configuration File

To configure the OpenVPN client software, you need the `*.ovpn` file. To download this file, please proceed as follows:

1. Open the Cloud Panel.
2. To download the configuration file, click **VPN** in the section Private Cloud.

## Configure Tunnelblick

1. Open the Downloads directory.
2. Click on the folder you have downloaded.
3. Double-click the file with the `.ovpn` extension. Example: `vpn_4fq1e_1.ovpn`
4. Click on **Only for this user**.
5. Enter the password of the administrator account. The configuration will be installed.
6. Open Tunnelblick.
7. In the menu bar at the top of the screen, click on the **Tunnelblick icon**.
8. Click on **VPN details**.
9. In the navigation bar on the left, under **Configurations** select the configuration you have imported.
10. Click on **Settings**.
11. In the **Set DNS/WINS** list, select the setting **Do not set nameserver**.


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