If you want your friends to be able to connect to you, you need to buy a server that will host your emulator and OpenServer.
- Click on the link SUPER DEAL (LIMITED OFFER) 100 USD FOR REGISTRATION!!!: GET YOUR bonus for VPS account (or this link)
- Register and get $100 for FREE for your account for trying Vultr
- Load money for VPS
- Click on + and create VPS
- Receive your extra bonus balance for your account because of the link above.