• Type “Windows Firewall” into the search box, and then click on “Windows Defender Firewall.”
• When the Windows Firewall opens, click on “Advanced Settings.”
• Click the “Inbound Rules” category on the left. In the far right pane, click the “New Rule” command.
• If you need to open a rule for outgoing traffic, instead of clicking “Inbound Rule,” you should click “Outbound Rule”
• On the Rule Type page, select the “Port” option and then click “Next.”
• Choose whether the port you’re opening uses the Transmission Control Protocol (TCP) or User Datagram Protocol (UDP).
• Select the “Specific Local Ports” option and then type the port number into the field provided. If you’re opening more than one port, you can separate them by commas. If you need to open a range of ports, use a hyphen
• Click “Next” when  done.
• On the next page, click “Allow the Connection” and then click “Next.”
• Next, choose when the rule applies and click “Next.”
• Give your new rule a name and an optional, more detailed description. Click “Finish” when you’re done.

After completing the steps listed above you will already allow ports through firewall in Windows 10.