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open-vpn-setup/open_vpn_setup.sh
2023-11-17 23:33:12 +00:00

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#!/bin/bash
# Update System
sudo apt-get update && sudo apt-get upgrade -y
# Install OpenVPN and Easy-RSA
sudo apt-get install openvpn easy-rsa -y
# Set up Easy-RSA
make-cadir ~/openvpn-ca
cd ~/openvpn-ca
# Customize the vars file (Optional)
# nano vars
# Build CA
source vars
./clean-all
./build-ca --batch
# Create the Server Certificate, Key, and Encryption Files
./build-key-server --batch server
./build-dh
openvpn --genkey --secret keys/ta.key
# Copy the Server Certificates and Keys
sudo cp keys/{ca.crt,server.crt,server.key,ta.key,dh2048.pem} /etc/openvpn
# Configure the OpenVPN Service
gunzip -c /usr/share/doc/openvpn/examples/sample-config-files/server.conf.gz | sudo tee /etc/openvpn/server.conf
# Adjust the OpenVPN Configuration (Manual Step)
# sudo nano /etc/openvpn/server.conf
# Enable IP Forwarding
echo 'net.ipv4.ip_forward=1' | sudo tee -a /etc/sysctl.conf
sudo sysctl -p
# Adjust UFW Rules (If UFW is used)
# sudo ufw allow 1194/udp
# sudo ufw allow OpenSSH
# sudo ufw disable
# sudo ufw enable
# Start and Enable OpenVPN Service
sudo systemctl start openvpn@server
sudo systemctl enable openvpn@server
echo "OpenVPN installation is complete."