OpenVPN Site-to-Site

#!/bin/bash

# Clear the screen
clear

echo -e "\e[96m_________________________________________________________\e[0m"
echo ""
echo -e "\e[93mDo you want to install OpenVPN Server? (y/n)\e[0m"
echo ""
echo -e "\e[96m_________________________________________________________\e[0m"
read -p "" yn

case $yn in
    [Yy]* )
        echo -e "\e[92mUpdating system and installing required packages...\e[0m"
        apt update && apt -y install ca-certificates wget net-tools gnupg
        
        echo -e "\e[95mAdding the OpenVPN repository...\e[0m"
        wget https://as-repository.openvpn.net/as-repo-public.asc -qO /etc/apt/trusted.gpg.d/as-repository.asc
        echo "deb [arch=amd64 signed-by=/etc/apt/trusted.gpg.d/as-repository.asc] http://as-repository.openvpn.net/as/debian bookworm main" > /etc/apt/sources.list.d/openvpn-as-repo.list
        
        echo -e "\e[92mUpdating system and installing OpenVPN AS...\e[0m"
        apt update && apt -y install openvpn-as
        echo -e "\e[32mOpenVPN Server has been installed successfully.\e[0m"
        ;;
    [Nn]* )
        echo -e "\e[91mInstallation cancelled by user.\e[0m"
        ;;
    * )
        echo -e "\e[91mPlease answer yes or no.\e[0m"
        ;;
esac

echo -e "\e[96m_________________________________________________________\e[0m"
echo ""
echo -e "\e[95mADVISORY: This script should be used for authorized penetration testing and/or educational purposes only. Any misuse of this software will not be the responsibility of the author or of any other collaborator. Use it at your own computers and/or with the computer owner's permission.\e[0m"
echo ""
echo -e "\e[96m_________________________________________________________\e[0m"