First assuming you already had rpmforge yum repos.
Just need to get open rpm installed..

yum install openvpn -y

Now start configure it :
get into the OpenVPN configuration folder

cd /etc/openvpn/

Generate the secret key at the server ..
(this file shall be transferred to each client too..)

openvpn –genkey –secret ta.key

Now get the rest of cert and [...]

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