The process itself is simple, and should not take long to complete:
- Tap on the Windows-key, type Windows Firewall, and select Windows Firewall with Advanced Security from the results.
- Click on Inbound Rules when the firewall window opens.
- Select New Rule from the Actions pane.
- Select Port from the Rule Type listing.
- Select TCP or UDP, and specify the ports, or a port range (e.g. 445, or 137-139).
- Select block the connection.
- Select when the rule applies (leave default if unsure).
Add a name, e.g. Port 445, and a description, (e.g. reason for blocking, and date/time).