Networks

Chances are you're behind a NATing firewall/router to the ports would probably need setting up on there.

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Two things.

first if you are using a router you must forward your port 3389 to your computer. instruction are different for different routers. google port forwarding and your router

second if you are using a software firewall (kaspersky, norton, comodo, ect.) you must open port 3389 in your firewall. also different for each product. check with the vendor.