# FortiClient

# Enable Debug Logging

1. Open FortiClient
2. Click the “Cog” Icon in the top right corner

<figure class="image" id="bkmrk-">![](https://wiki.oliver-karger.de/fortinet/forticlient/navbar.png)</figure>3\. Click on the “Lock” Icon in the top right corner

4\. Set “Log Level” to “Fehlersuche” / “Debug”

<figure class="image" id="bkmrk--1">![](https://wiki.oliver-karger.de/fortinet/forticlient/debug-logging/set_log_level.png)</figure>

# VPN Client Installation

#### Requirements

- VPN Configuration File
- Username
- Password

#### Install FortiClient

Download latest FortiClient Release from [https://www.fortinet.com/de/support/product-downloads](https://www.fortinet.com/de/support/product-downloads)

<p class="callout warning">Only Download the "VPN-only Version" !</p>

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-06/scaled-1680-/qmdimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-06/qmdimage.png)

Run and complete the Setup after downloading

#### Importing VPN Configuration

##### Launch “FortiClient” after installing

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-06/scaled-1680-/Q6zimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-06/Q6zimage.png)

##### Click on the “Cog” Icon in the top right corner

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-06/scaled-1680-/9Zdimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-06/9Zdimage.png)

Click on the “Lock” icon in the top left corner to unlock the System Configuration Import ("Wiederherstellen" Button the the Screenshot)

Click “Wiederherstellen and select your Configuration File”

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-06/scaled-1680-/61fimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-06/61fimage.png)

5\. (Optional) If your Configuration File is encrypted, enter your Password provided to you by your Administrator

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-06/scaled-1680-/sQpimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-06/sQpimage.png)

Click on the “Home” Icon in the top left, enter your Username and Password to connect

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-06/scaled-1680-/D9Wimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-06/D9Wimage.png)

# SSL-VPN on custom Interface

This explains how to setup the SSL-VPN on a FortiGate (E-Series) on a Custom Interface for better Controls.

This is done because per default, SSL-VPN Listens on the WAN Interface directly, therefor can not be controlled by any Policy.

### Create Loopback Interface

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/scaled-1680-/rpiimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/rpiimage.png)

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/scaled-1680-/XFDimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/XFDimage.png)

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/scaled-1680-/q1Kimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/q1Kimage.png)

### Bind SSL-VPN to new Loopback Interface

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/scaled-1680-/C8yimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/C8yimage.png)

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/scaled-1680-/AQ0image.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/AQ0image.png)

### Redirect SSL-VPN Traffic

We now need to make sure the SSL-VPN Traffic actually reaches the new SSL-VPN Interface. We will use a Virtual IP with Port Forwarding for that.

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/scaled-1680-/YLeimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/YLeimage.png)

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/scaled-1680-/9SAimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/9SAimage.png)

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/scaled-1680-/uGlimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/uGlimage.png)

### Allow Traffic to new Interface

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/scaled-1680-/exOimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/exOimage.png)

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/scaled-1680-/tsvimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/tsvimage.png)

[![image.png](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/scaled-1680-/adOimage.png)](https://kb.oliver-karger.de/uploads/images/gallery/2025-10/adOimage.png)