![]() ![]() ![]() You will need to enter the CA passphrase./easyrsa sign-req client user01Įach VPN user should have their own certificate/key. Generate a certificate request for the user user01./easyrsa gen-req user01 nopass openvpn -genkey tls-auth /etc/openvpn/easy-rsa/pki/ta.key Create client key and certificate Generate an OpenVPN static key to enhance SSL/TLS security. The server certificate will be created./easyrsa sign-req server Generate Diffie Hellman parameters./easyrsa gen-dh Use this subdomain as the common name./easyrsa gen-req nopass Replace with a real sub-domain for your OpenVPN server. Generate a keypair and certificate request for the OpenVPN server. ![]() When asked about setting a common name for the CA, you can press Enter to choose the default name: Easy-RSA CA. You will be asked to enter a passphrase for the CA. Then create a certificate authority./easyrsa build-ca Initialize a public key infrastructure./easyrsa init-pki sudo make-cadir /etc/openvpn/easy-rsaĬhange to the /etc/openvpn/easy-rsa/ directory. As its name implies, it’s easier than openssl.įirst, run the following command to copy the /usr/share/easy-rsa/ directory to /etc/openvpn/. Instead, we can use the easy-rsa utility, which is installed in step 1. The openssl utility is widely used to set up a certificate authority, but its command line syntax is complex. However, Let’s Encrypt doesn’t issue client certificates, so we need to set up a private certificate authority for OpenVPN. For example, Let’s Encrypt is a certificate authority that issues free TLS server certificates. ![]() To accomplish this, we need to set up a public key infrastructure (PKI), which includes:Ī certificate authority issues server certificates and client certificates. Each user will have their own certificate. To support multiple users, we need to use certificate authentication. OpenVPN supports password authentication (pre-shared key), but it’s very limited. Sudo apt install -y openvpn openvpn-systemd-resolved easy-rsa Step 2: Set Up Certificate Authentication in OpenVPN Then use apt to install the openvpn package from the default Ubuntu repository. Step 1: Install OpenVPN Server on Ubuntu 22.04/20.04 Once you have a VPS running Ubuntu 22.04/20.04, follow the instructions below.
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