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Explain the process of setting up a basic firewall rule to block all incoming traffic on a specific port in Windows Defender Firewall with Advanced Security.



To set up a basic firewall rule to block all incoming traffic on a specific port in Windows Defender Firewall with Advanced Security, follow these steps. First, open 'Windows Defender Firewall with Advanced Security'. You can search for it in the Start menu. This tool allows you to create and manage detailed firewall rules. Next, in the left pane, select 'Inbound Rules'. Inbound rules control traffic coming into your computer. Then, in the right pane, click 'New Rule...' This will open the 'New Inbound Rule Wizard'. In the 'Rule Type' step, select 'Port' and click 'Next'. This specifies that you want to create a rule based on a specific port. In the 'Protocol and Ports' step, select 'TCP' or 'UDP' depending on the protocol you want to block. Then, in the 'Specific local ports' field, enter the port number you want to block. For example, if you want to block incoming traffic on port 8080, enter '8080'. Click 'Next'. In the 'Action' step, select 'Block the connection' and click 'Next'. This will prevent any traffic from reaching the specified port. In the 'Profile' step, select the profiles for which you want to apply the rule: 'Domain', 'Private', and/or 'Public'. It is generally recommended to apply the rule to all profiles for maximum security. Click 'Next'. In the 'Name' step, enter a descriptive name for the rule, such as 'Block Incoming Port 8080'. You can also add a description to explain the purpose of the rule. Click 'Finish'. The new rule will now be listed in the 'Inbound Rules' list and will be enabled automatically. All incoming traffic on the specified port will be blocked. Remember to test the rule to ensure it is working as expected. You can use tools like `telnet` or `nmap` from another machine to attempt to connect to the blocked port and verify that the connection is refused.