VPN on MikroTik hEX

RouterOS Beginner Basics
1

I’m struggling to let my VPN work from the public Internet.
Situation is like the following:

MikroTik hEX is placed behind router with a static IP address on port 1.

I’m able to establish a VPN connection in my own LAN, I’m connected and can reach the Internet and all devices in my LAN.
So nothing wrong to make the VPN connection.
Next step was to make a port forwarding in my router. I select the IP from the MikroTik and opened port 1723.

Then I changed the IP configuration from my iPhone to the IP address of my WAN.
When I try to make now a VPN connection he’s not able to connect with message that L2TP Server is not responding.

Hope someone can help me to let it work and I prefer to keep the MikroTik behind the firewall.

Thanks in advance !

Kind Regards

Bert

2

I select the IP from the MikroTik and opened port 1723.

Thats wrong !
TCP 1723 ist used by PPTP VPN protocoll and has nothing to do with L2TP !
You mixed up the different VPN protocolls here.
PPTP = GRE (IP protocoll 47) and TCP 1723
L2TP = ESP (IP protocol 60) and UDP 1701
So forward the correct ports and protocols and it will run instantly.