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OpenVPN

Install needed packages:

# apt install --no-install-recommends openvpn openssl

Download easy-rsa v3.0.4 and install it.

We don't use the git clone version because we would need to use the build.sh script with the –version=3.0.4 version to generate the final version

# wget --no-check-certificate https://github.com/OpenVPN/easy-rsa/releases/download/v3.0.4/EasyRSA-3.0.4.tgz
# tar -xvzf EasyRSA-3.0.4.tgz
# rm EasyRSA-3.0.4.tgz
# mv EasyRSA-3.0.4/ /etc/openvpn/easy-rsa/

Make sure you have this option set: set_var EASYRSA_PKI “/etc/openvpn/easy-rsa/pki” in /etc/openvpn/easy-rsa/vars

Initialize a new PKI and generate a CA keypair that will be used to sign certificates.

# cd /etc/openvpn/easy-rsa
# export EASYRSA=$(pwd)
# easyrsa init-pki
# easyrsa build-ca nopass

Common name : Testing server OpenVPN certificate

Reference: https://wiki.archlinux.org/index.php/Easy-RSA