[OpenVPN] Multi-TAP

OpenVPN.md

OpenVPN, by default, installs only one TAP network interface. If you want to connect to multiple VPNs simultaneously you need a TAP interface for each VPN.

Add an additional TAP adapter

• Open a command prompr with administrative rights
• Go to the TAP install folder C:\Program Files\TAP-Windows\bin
• Launch the addtap.bat script, the result will be :

  "devcon.exe" install "C:\Program Files\TAP-Windows\driver\OemWin2k.inf" tap0901
  Device node created. Install is complete when drivers are installed...
  Updating drivers for tap0901 from C:\Program Files\TAP-Windows\driver\OemWin2k.inf.
  Drivers installed successfully.
  

• Launch the command openvpn --show-adapters for checking the result :

  Available TAP-WIN32 adapters [name, GUID]:
  'Local Area Connection 2' {DD2A53C5-63BD-492A-A7F4-94E724007B2A}
  'Local Area Connection 3' {EF7623C03-542A-34E8-B633-E3B742983E3}
  

• Put your .ovpn config and certificates files to the OpenVPN config folder and add nobind to each config so that a dynamic (UDP) source port is used for each VPN session.

When a static assignment between a VPN and a specific interface is necessary add the TAP Interface name as parameter of the dev-node option to the openvpn config file.

dev tap
dev-node "Local Area Connection 3"

I am using windows 10 and I can't see this TAP-Windows in my Program Files. How can I resolve this issue?

@fredjoseph