I use MacOS at work, where I connect to a VPN (using Tunnelblick). We use a "jumpbox" to proxy requests to the VPN server itself. I have an ovpn file, username and password for the VPN, plus a username and pem file to get into the jump server.
In Tunnelblick, there's an option for assigning a proxy server and username/cert file. I don't see such an option using OpenVPN on Linux (Fedora 29) using the default network manager GUI for KDE (kcm_networkmanagement). Is there a way to use a jump server in Fedora's OpenVPN client? If not, is there another OpenVPN client that might work?
I've tried Frohu client, but I don't see any jump server / proxy options there. I've also tried using OpenVPN from the command line, but openvpn --config never asks for a proxy option, and the man page help doesn't seem to support jump servers, as far as I can tell.