Port Forwarding Step by Step using Mikrotik RouterOS

Learn how to easily provide access to internal resources using private IP addresses by using destination NAT (dst-nat)

You'll learn how to configure Mikrotik devices using the GUI (Winbox) an CLI (Command Line Interface).

CLI Command
/ip firewall nat
add action=dst-nat chain=dstnat dst-address=PUBLIC-IP dst-port=PUBLIC-PORT protocol=tcp to-addresses=INTERNAL-IP to-ports=INTERNAL-PORT

Install Mikrotik on GNS3 - Network Simulator
https://youtu.be/RIt6A8xM0Vw