Tuning UDP-based connections
In this recipe, we focus on some of the basic techniques for optimizing UDP-based VPN tunnels. These techniques need to be applied with care, as there is no fool-proof method for optimizing OpenVPN performance. The actual performance gain varies with each network setup. Therefore, this recipe only shows some of the configuration directives that can be used for this optimization.
Getting ready
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. For this recipe, the server computer was running CentOS 6 Linux and OpenVPN 2.3.11. The client was running Fedora 22 Linux and OpenVPN 2.3.11. Keep the configuration file basic-udp-server.conf from the Server-side routing recipe from Chapter 2, Client-server IP-only Networks, as well as the client configuration file basic-udp-client.conf.
How to do it...
Append the following line to the
basic-udp...
