In this recipe, we will use traffic shaping to limit the upload speed of an OpenVPN client. This can be used to throttle the bandwidth of a client to the server, or from client to client. Note that OpenVPN traffic shaping cannot be used to throttle the download speed of OpenVPN clients. Throttling download speeds can best be achieved using external traffic control tools, such as the
tc utility on Linux, which is part of the LARTC package.
We use the following network layout:
Set up the client and server certificates using the Setting up the public and private keys recipe from Chapter 2, Client-server IP-only Networks