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== WireGuard VPN Installation and Usage Guide ==

'''WireGuard''' is a modern, fast, and secure VPN solution. This guide provides step-by-step instructions on how to install and configure WireGuard on Windows, Linux, and macOS.

To use WireGuard, you need:
* The WireGuard application installed on your system.
* A VPN configuration file (e.g., '''wg-config.conf''') provided by your system administrator.

'''!!! Each user should request only one configuration file per device and should NOT share it with other users or devices. !!!'''

== Windows Installation ==

=== Downloading the Application ===
1. Go to the official WireGuard website: [https://www.wireguard.com/install/ https://www.wireguard.com/install/]
2. Download the **Windows Installer**.

[[File:Wireguard_download_page.png|1500px|Download the WireGuard installer from the official website.]]

=== Installing the Application ===
1. Double-click the downloaded file (**wireguard-installer.exe**).
2. Follow the installation instructions.
3. After installation, open the WireGuard application.

[[File:Wire1.png|Opening WireGuard after installation.]]

=== Importing the Configuration File ===
1. Open the WireGuard application.
2. Click the '''"Import tunnel(s) from file"''' button.
3. Select the configuration file (**wg-config.conf**) provided by your system administrator.

[[File:upload_config_file.png|Importing the configuration file into WireGuard.]]

=== Activating the VPN ===
1. Once the configuration file is loaded, click on the **Activate** button.
2. If the connection is successful, the status will change to **Active** (green).

[[File:Activare1.png|WireGuard connection activated.]]

== Linux Installation ==

=== Installing WireGuard ===
1. Open a terminal.
2. Run the following command to install WireGuard:

<syntaxhighlight lang="bash">
sudo apt install wireguard    # For Debian-based systems (Ubuntu)
sudo dnf install wireguard    # For Fedora-based systems
sudo pacman -S wireguard-tools # For Arch Linux
</syntaxhighlight>

=== Importing the Configuration File ===
1. Move the configuration file to the correct location:

<syntaxhighlight lang="bash">
cd ~/Downloads/
sudo cp wg-config.conf /etc/wireguard/
</syntaxhighlight>

2. Ensure the correct file permissions:

<syntaxhighlight lang="bash">
sudo chmod 600 /etc/wireguard/wg-config.conf
</syntaxhighlight>

=== Activating the VPN ===
To start the VPN connection, run:

<syntaxhighlight lang="bash">
sudo wg-quick up wg-config
</syntaxhighlight>

To stop the VPN connection, run:

<syntaxhighlight lang="bash">
sudo wg-quick down wg-config
</syntaxhighlight>

To check the status of the WireGuard connection:

<syntaxhighlight lang="bash">
wg
</syntaxhighlight>

== macOS Installation ==

=== Downloading and Installing WireGuard ===
1. Open the **App Store**.
2. Search for **WireGuard**.
3. Click **Install**.

=== Importing the Configuration File ===
1. Open the WireGuard application.
2. Click on **Import tunnel(s) from file**.
3. Select the configuration file (**wg-config.conf**).

[[File:upload_config_file.png|Importing the configuration file into WireGuard on macOS.]]

=== Activating the VPN ===
1. Click on the tunnel you imported.
2. Click the **Activate** button.

Once activated, your internet traffic will be routed through the VPN.

[[File:Activare2.png|WireGuard successfully connected on macOS.]]

== Checking Connection Status ==
To verify your VPN connection, visit:
[https://www.whatismyip.com/ https://www.whatismyip.com/]

Your IP address should match the one assigned by the VPN server.

== Troubleshooting ==

'''Q: My WireGuard connection does not work. What should I do?'''  
A: Check the following:
* Ensure that the configuration file is correctly imported.
* Verify that your internet connection is active.
* Restart the WireGuard service:
  <syntaxhighlight lang="bash">
  sudo wg-quick down wg-config
  sudo wg-quick up wg-config
  </syntaxhighlight>
* If the problem persists, contact your system administrator.

'''Q: I cannot browse the internet after connecting to WireGuard.'''  
A: This could be due to incorrect routing. Check with:

<syntaxhighlight lang="bash">
ip route
</syntaxhighlight>

Ensure that your VPN server is properly configured.

'''Q: How do I disconnect from WireGuard?'''  
A: Click **Deactivate** in the WireGuard interface or run:

<syntaxhighlight lang="bash">
sudo wg-quick down wg-config
</syntaxhighlight>

== Conclusion ==

You have now installed and configured WireGuard on Windows, Linux, and macOS. Always ensure your VPN is active when working remotely for security and privacy.

If you encounter any issues, contact your system administrator for further assistance.