L2TP VPN can not connect on Windows 10

I am new vpn user and I have configured an L2TP server with a shared key on my laptop. I have tried numerous ways like disabling of firewall but it can’t connect. Anyone can help me.

@rootwilliamson

Just guessing, but you may need to implement some type of port forwarding if you’re behind a router.

You mean I need to implement port forwarding. Right