Multiple OpenVPN clients on the same host

[yuripod]

I am working with OpenVPN in OpenWRT. I need to create multiple OpenVPN clients connected to the same VPN server. All clients shall work simultaneously.
Is it possible? If yes - what are the main steps of multiple clients setup?

[Traffic]

OpenVPN on OpenWRT supports --server therefore supports multiple clients.

Protip: Use google "site:" feature to search this forum for answers.

eg .. into google:

Code: Select all

site:forums.openvpn.net openwrt

You can also use HOWTO: For OpenVPN Community Edition and create a custom server config in OpenWRT which uses standard openvpn directives (there maybe some incosistencies in OpenWRT which we do not support)

[yuripod]

In my application there are two hosts. On one host I have to run multiple VPN clients, each one associated with its interface. The VPN server will run on another host. All VPN clients on the 1-st will have to be connected to the same VPN server on the second host.
Of course I looked at all relevant documentation sources like HOWTO etc, but I couldn't find the clear instructions how to setup it and even if it is possible at all.

[yuripod]

My problem is that I have to have multiple OpenVPN clients on the same host to be connected to the same VPN server. That is if I open ifconfig I am supposed to see virtual interfaces tun0, tun1 etc. Each interface shall be associated with its physical interface. Is this supported by OpenVPN?

[Traffic]

What you appear to propose is:

• Host 1: Openvpn Server / 1 Server instance
  • Openvpn Server @ 10.8.0.1 (example)
• Host 2: OpenVPN Client / Multiple Client instances
  • Openvpn Client 1 @ 10.8.0.11 (examples)
    Openvpn Client 2 @ 10.8.0.21
    Openvpn Client 3 @ 10.8.0.31
    etc

This is possible ..

[alexeypolo]

You can use network namespaces, each VPN client will run in a separate network namespace. As a result, all clients can have identical IP addresses, because they are separated by network namespaces.