Which router to choose as an openvpn client?

Question

openvpn

Good afternoon, which router should I choose as an openVpn client?
More about the task:
There is an OpenVPN server, there are files with keys .ca, .opvn
There are several computers + router "A" - form a local network.
Now, in order to connect to the vpn server on each computer, you need to run the openvpn client. It is not comfortable.
Here's what I would like:
On a separate router "B" set up an openvpn client.
Computers connected to the router "B" computers will be able to communicate within the local network.
If you need Internet access to router “B”, insert the ethernet cable from router “A” and now computers have Internet access, including openvpn.
You also need to be able to configure port forwarding so that inside the vpn network, by the ip of router “B”, but using different ports, you can access different ips inside the local network of router “B”.
As I understand router "B" will act as a bridge to router "A" + openvpn client.
What router is suitable for this? I would like it to work right out of the box, without installing third-party firmware. I think in the direction of Asus rt-n66u.

Answer 1

What router is suitable for this?

Best of all - any router with OpenWrt on board, or the ability to reflash to it. Even if there are adventures, it will be easier to get around them on OpenWrt than on native firmware of various brands.
And as for proprietary implementations of openvpn (as in ROS, for example) - it's better not to.

Answer 2

Tried dd-wrt firmware. Difficult and not stable, perhaps I could not set it up properly. Keenetic Start turned out to be an unexpectedly good solution, the whole setup is to copy the ovnp file through the router's admin panel. And everything works.