Install VPN on raspberry pi

install_openvpn.sh

sudo apt-get install openvpn

# Copy over the .tar.gz with the config files
sudo mv $$$$_linux.tar.gz /etc/openvpn
cd /etc/openvpn
sudo tar -xf $$$$_linux.tar.gz
# Enable up/down
sudo chmod +x /etc/openvpn/update-resolv-conf

# Use this to start:
sudo openvpn --daemon --cd /etc/openvpn --config ibVPN-UK-Gosport.ovpn

# Check status:
curl ipinfo.io/ip

# To disconnect:
killall -9 openvpn

# Enable at boot:
sudo systemctl enable openvpn@ibVPN-UK-Gosport

# Block outbound traffic from Raspberry Pi 
sudo iptables -A OUTPUT -o tun0 -m comment --comment “vpn” -j ACCEPT
sudo iptables -A OUTPUT -o eth0 -p icmp -m comment --comment “icmp” -j ACCEPT
sudo iptables -A OUTPUT -d 192.168.1.0/24 -o eth0 -m comment --comment “lan” -j ACCEPT
sudo iptables -A OUTPUT -o eth0 -p udp -m udp –dport 53 -m comment --comment “openvpn” -j ACCEPT
sudo iptables -A OUTPUT -o eth0 -p tcp -m tcp –sport 22 -m comment --comment “ssh” -j ACCEPT
sudo iptables -A OUTPUT -o eth0 -p udp -m udp –dport 123 -m comment --comment “ntp” -j ACCEPT
sudo iptables -A OUTPUT -o eth0 -p udp -m udp –dport 53 -m comment --comment “dns” -j ACCEPT
sudo iptables -A OUTPUT -o eth0 -p tcp -m tcp –dport 53 -m comment --comment “dns” -j ACCEPT
sudo iptables -A OUTPUT -o eth0 -j DROP

# Save and then Apply the settings after reboot: 
sudo netfilter-persistent save