Use 'OpenVPN GUI' as VPN client

'OpenVPN GUI' (Client Software) 

Contents: 
Description
Setting up 'OpenVPN GUI'
Establishing a connection
Notes on connection issues

Description

This description serves to set up and use the 'OpenVPN GUI' as a VPN client for use as a 'DevicePro SIM Tunnel' as well as 'mdex Control station device'.

The 'OpenVPN GUI' provides a user-friendly way to manage and set up OpenVPN connections. The 'OpenVPN GUI' is particularly suitable if it is already being used for other OpenVPN connections. This software is exclusively available for the Windows operating system. 
Users with other operating systems must use alternative software solutions such as the 'OpenVPN Connect' app.
 

Setting up 'OpenVPN GUI'

Below are the steps for the complete setup of the OpenVPN GUI as 'DevicePro SIM Tunnel'.

1. Download the configuration file (.ovpn):
   • Download 'Download (.ovpn) for 'DevicePro SIM Tunnel' (for SIMPro/DevicePro users)
   • Download Download (.ovpn) for 'mdex Control station device' (for mdex mCOP users)
2. Download the current Windows 32/64-bit MSI installer from https://openvpn.net/community-downloads/ and run the installation.
3. Start the installed app OpenVPN GUI as an administrator, then right-click on the OpenVPN GUI icon and select Import -> Import file:
   
   
    
4. Select the previously downloaded configuration file (ovpn) and import it.
   (Alternatively, the ovpn configuration file can also be manually copied to the folder C:\Program Files\OpenVPN\config or C:\Users\<Username>\OpenVPN\config.)
5. Only if the 'OpenVPN GUI' is to establish multiple OpenVPN connections simultaneously, additional network adapters must be added under Start -> OpenVPN with 'Add a new TAP-Windows6 virtual network adapter'. 
   
6. The general setup is now complete.
   For further customisation of the OpenVPN GUI, see https://community.openvpn.net/openvpn/wiki/OpenVPN-GUI-New.
    

Establishing a connection

Please note that the connection using the configuration file (.ovpn) with pre-set login credentials (username & password) is allowed for only one client at a time. If multiple clients connect simultaneously with the same credentials, the connection will be regularly interrupted for all!

Procedure for establishing a connection with the OpenVPN GUI.

1. Right-click on the OpenVPN GUI icon and click Connect to establish the connection:
   
   
   If there are already other connections in the 'OpenVPN GUI', click Connect on 'Wireless Logic DevicePro SIM Tunnel...' or 'mdex fixed.IP30...': 
   

2. The connection is being established and the OpenVPN GUI icon lights up green.

   

3. The IP addresses or hostnames of your SIM cards are now accessible.

For more information on using the OpenVPN GUI, see https://community.openvpn.net/openvpn/wiki/OpenVPN-GUI-New.

Notes on connection issues

Is the connection taking longer than 30 seconds?

If the connection takes longer than 30 seconds, the UDP port 1194 may be blocked by a firewall in the network. In this case, we recommend testing the connection using the available configuration file (.ovpn) 'TCP-443'. 

• TCP-443 for 'DevicePro SIM Tunnel' see here.
• TCP-443 for 'mdex Control station device' see here. 

Alternatively, it is possible to manually adjust the current configuration file (.ovpn) by disabling the UDP servers with a semicolon (;). This will establish the connection directly with the next activated server over TCP port 443, then over TCP port 1194, see example for 'SIM Tunnel': 

;remote sim-tunnel.devicepro.wl.services 1194 udp
remote sim-tunnel.devicepro.wl.services 443 tcp
remote sim-tunnel.devicepro.wl.services 1194 tcp

Frequent disconnection?

The configuration file (.ovpn) of a User can be used in multiple clients, however, the connection may only be established by one client at a time. In the event that multiple clients with identical user credentials attempt to connect simultaneously, the connection is likely to be frequently disrupted for all clients involved.