More often than not, your current Internet-addressable IP address is not the IP adderss of your own workstation. The nearly ubiquitous use of network address translation (NAT) hides your own IP address behind the NAT gateway device.
Here we present your external, Internet addressable IP address...probably the external interface of your NAT gateway:
To actually access your own workstation from the Internet, you would need to perform port forwarding from your NAT gateway device or firewall. When someone mentions "punch a hole in the firewall", this is usually what they mean these days.
Here are a few commonly forwarded ports. They are mostly or all TCP ports, but you can also forwar UDP ports as well.
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