I installed Manage engine password manager pro on a local server with private ip 

ssh & RDP work correctly in local network . some users want to connect to manage engine out site my office I have a mikrotik I added a destination nat that every one that want to connect my static ip over port 7272 ( pmp port ) will be connect to py pmp local server ip over port 7272 

now over the internet my users can connect to pmp and ssh work correctly buy RDP dose not work 

how can I solve this problem ?