Here's how to Set up NordVPN OpenVPN on OpenWrt router. Get NordVPN@ [ Ссылка ].
i. Here are the steps to install OpenVPN on Windows using the command line interface (CLI):
1. Download the OpenVPN installer for Windows from [ Ссылка ]. Grab the openvpn-install-xxx.exe file for your Windows version.
2. Open a command prompt as administrator.
3. Navigate to the folder where you downloaded the OpenVPN installer. For example:
`cd C:\Users\Downloads`
4. Run the installer in silent mode with the following command:
`openvpn-install-xxx.exe /S`
5. The OpenVPN files will be extracted and installed without any prompts.
6. Install the TAP driver with this command:
`C:\Program Files\Tap-Windows\bin\addtap.bat`
7. To confirm it installed correctly, run:
`C:\Program Files\OpenVPN\bin\openvpn.exe`
You should see the OpenVPN help output.
8. You may also need to install OpenSSL if you want to setup your own certificate authority:
`choco install openssl`
This uses Chocolatey to install OpenSSL.
That's it! OpenVPN is now installed on Windows using the CLI. You can now generate certificates and keys to configure your own OpenVPN server. The OpenVPN docs have more details on generating the required PKI keys and certificates.
ii. Here are some tips for generating the certificates and keys needed to configure an OpenVPN server:
- Use the EasyRSA utility that comes with OpenVPN to generate your PKI (public key infrastructure). It has commands to build the certificate authority (CA) and generate certs/keys for the server and clients.
- Generate the server certificate and key first. The server cert should have the server's hostname or public IP address as the Common Name (CN).
- For each client, generate a certificate and key with the client's name as the CN. This links the cert to the specific client.
- Revoke certificates that become compromised by using easyrsa revoke to prevent unauthorized access.
- Set appropriate certificate expiration periods. A longer time like 2-3 years for the root CA and 90 days for client certs is common.
- Use 4096 bit key sizes for optimal security when generating the DH params and PKI elements.
- Consider using an HMAC firewall (with certs) to further secure the VPN tunnel.
- For the server config, point to the CA cert, server cert/key, and DH params files.
- For each client config, point to the CA cert, client cert/key, and DH params files.
- Distribute the appropriate ca cert, client cert, client key, and DH params to each client device.
- Set tls-crypt or tls-auth for adding HMAC to the VPN tunnel for more security.
Following the best practices for generating and managing the PKI infrastructure will help keep your OpenVPN server secure. Refer to the OpenVPN docs for more details.
