“In a previous tip last week, we looked at setting up an OpenVPN
server. Now, I’ll take you through the setup of a Linux OpenVPN
client. (I have also covered setting up an OS X client on OpenVPN
in the Macs in Business blog). The Linux client will be based on
CentOS 5 using OpenVPN 2.0.9.“For each client, you will need to have copied the client’s
certificate and key, as well as the CA certificate, from the
server. This should be done in a secure manner so you can ensure
the files are not altered in any way, such as using SSH to transfer
or a USB stick in your possession. Once they are on the client,
copy them to the /etc/openvpn/ directory:”