If you want to revoke some key, run the command as below..easyrsa revoke someone And then generate the CRL key..easyrsa gen-crl The CRL PEM file has been generated under the pki directory - following is an example on my server.
No Server Certificate Method Has Been Enabled Mac OS On WindowsHow to Install OpenVPN Server and Client with Easy-RSA 3 on CentOS 7 This tutorial exists for these OS versions CentOS 8 CentOS 7.6 CentOS 7 On this page Prerequisites What we will do Step 1 - Install OpenVPN and Easy-RSA Step 2 - Configure Easy-RSA 3 Step 3 - Build OpenVPN Keys Initialization and Build CA Build Server Key Build Client Key Build Diffie-Hellman Key Optional: Generate the CRL Key Copy Certificates Files Step 4 - Configure OpenVPN Step 5 - Enable Port-Forwarding and Configure Routing Firewalld Step 6 - OpenVPN Client Setup Step 7 - Testing OpenVPN - On Linux On Mac OS On Windows Reference OpenVPN is an open source application that allows you to create a secure private network over the public internet.OpenVPN implements a virtual private network (VPN) to create a secure connection.OpenVPN Uses the OpenSSL library to provide the encryption and it provides several authentication mechanisms, such as certificate-based, pre-shared keys, and usernamepassword authentication.
No Server Certificate Method Has Been Enabled Install And ConfigureIn this tutorial, we will show you how to step-by-step install and configure OpenVPN on CentOS 7.6. And we will implement the certificate-based OpenVPN authentication. Prerequisites CentOS 7.6 Root privileges What we will do Install OpenVPN and Easy-RSA Configure Easy-RSA 3 Vars Build OpenVPN Keys Configure OpenVPN Server Configure Firewalld and Enable Port Forwarding Client Setup Testing Step 1 - Install OpenVPN and Easy-RSA In this tutorial, we will be using the latest version of centos server (7.5), and we will be using the OpenVPN 2.4 with the easy-rsa 3. Before installing the OpenVPN and easy-rsa packages, make sure the epel repository is installed on the system. If you dont have it, install the epel repository using the yum command below. Step 2 - Configure Easy-RSA 3 In this step, we will will configure easy-rsa 3 by creating new vars file. Now make the vars file executable by changing the permission of the file. Step 3 - Build OpenVPN Keys In this step, we will build the OpenVPN keys based on the easy-rsa 3 vars file that weve created. We will build the CA key, Server and Client keys, DH and CRL PEM file. Initiate the PKI directory and build the CA key using the command below..easyrsa init-pki.easyrsa build-ca Now type the password for your CA key and you will get your ca.crt and ca.key files under the pki directory. Build Server Key Now we want to build the server key, and we will build the server key named hakase-server. Build the server key hakase-server using the command below..easyrsa gen-req hakase-server nopass Advertisement Note: nopass option for disable password for the hakase-server key. And sign the hakase-server key using our CA certificate..easyrsa sign-req server hakase-server You will be asked for the CA password, type the password and press Enter. And you will get the hakase-server.crt certificate file under the pkiissued directory. Verify the certificate file using the OpenSSL command and make sure there is no error. The server private key is located at the pkiprivatehakase-server.key, and the server certificate on the pkiissuedhakase-server.crt. ![]() Generate the client01 key using the command below..easyrsa gen-req client01 nopass Now sign the client01 key using our CA certificate as below..easyrsa sign-req client client01 Type yes to confirm the client certificate request, then type the CA password. The client certificate named client01 has been generated, verify the client certificate using the openssl command. We will be using the length key that we define on the vars file. Generate the Diffie-Hellman key using command below..easyrsa gen-dh The DH key has been generated, located at the pki directory. Optional: Generate the CRL Key The CRL (Certificate Revoking List) key will be used for revoking the client key. If you have multiple client certificates on your vpn server, and you want to revoke some key, you just need to revoke using the easy-rsa command.
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