OVPNServer-18.04-Ubuntu

#!/bin/bash
clear
ip a
echo 'Please enter your relevant network adapter'
read adapter
clear
echo 'Please enter the port you will be using'
read port
clear
echo 'Please enter the protocol, (tcp or udp)'
read protocol
curl 'https://raw.githubusercontent.com/MrFlacko/Scripts/master/UbuntuMirrors18.04' > /etc/apt/sources.list
apt update
apt upgrade -y
apt install net-tools -y
curl 'https://raw.githubusercontent.com/Nyr/openvpn-install/master/openvpn-install.sh' > install.sh
bash install.sh
echo 'script-security 2' >> /etc/openvpn/server/server.conf
echo 'up /etc/openvpn/update-resolv-conf' >> /etc/openvpn/server/server.conf
echo 'down /etc/openvpn/update-resolv-conf' >> /etc/openvpn/server/server.conf
apt install firewalld -y
firewall-cmd --permanent --add-port=$port/$protocol
firewall-cmd --permanent --add-port=22/tcp
iptables -I FORWARD -i tun0 -o $adapter -s 10.8.0.0/24 -m conntrack --ctstate NEW -j ACCEPT
iptables -I FORWARD -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
iptables -t nat -A POSTROUTING -o $adapter -s 10.8.0.0/24 -j MASQUERADE
iptables-save > /etc/firewall.conf
firewall-cmd --reload
systemctl restart openvpn
echo '!/bin/sh' > /etc/network/if-up.d/iptables
chmod +x /etc/network/if-up.d/iptables
echo 'iptables-restore < /etc/firewall.conf' >> /etc/network/if-up.d/iptables
systemctl restart openvpn-server@server
bash install.sh