Debian 10 Set Up OpenVPN Server

Setting up an OpenVPN server on Debian 10 can be done in just a few minutes using the following steps:

1. Install OpenVPN by running the command sudo apt-get install openvpn
2. Create a directory to store the server configuration files by running the command sudo mkdir /etc/openvpn/server
3. Generate the server's private key and certificate by running the command sudo openvpn --genkey --secret /etc/openvpn/server/secret.key
4. Create a configuration file for the server by running the command sudo nano /etc/openvpn/server/server.conf and add the following content to it:

port 1194
proto udprndev tunrnca /etc/openvpn/server/ca.crtrncert /etc/openvpn/server/server.crtrnkey /etc/openvpn/server/server.keyrndh /etc/openvpn/server/dh.pemrnserver 10.8.0.0 255.255.255.0
ifconfig-pool-persist ipp.txtrnpush "redirect-gateway def1 bypass-dhcp"
push "dhcp-option DNS 8.8.8.8"
push "dhcp-option DNS 8.8.4.4"
keepalive 10 120
comp-lzornpersist-keyrnpersist-tunrnstatus openvpn-status.logrnverb 3

1. Generate the Diffie-Hellman parameters by running the command sudo openvpn --genkey --secret /etc/openvpn/server/dh.pem
2. Start the OpenVPN server by running the command sudo systemctl start openvpn@server
3. Enable OpenVPN to start automatically at boot by running the command sudo systemctl enable openvpn@server
4. Create client configuration files and distribute them to your clients.
5. Configure your firewall to allow incoming connections on port 1194

rnAfter completing these steps, you should have a fully functional OpenVPN server that you can connect to from any client with the proper configuration files.

It is important to note that this is a basic setup and there are many other options and configurations that can be added to the server.conf file to improve security and functionality, also the host firewall should be configured to allow incoming connections on port 1194.