A Virtual Private Network is a technology solution used to provide privacy and security for inter-network connections. The most well-known case consists of people connecting to a remote server with traffic going through a public or insecure network (such as the Internet).
In this article, we will explain how to set up a VPN server in an RHEL 9 server using OpenVPN, a robust and highly flexible tunneling application that uses encryption, authentication, and certification features of the OpenSSL library.
For simplicity, we will only consider a case where the OpenVPN server acts as a secure Internet gateway for a client.