Final answer:
To configure a firewall on a router to block incoming traffic to a server, one needs to access the router's admin interface, navigate to the firewall settings, create a new rule to block traffic, specify the server's IP and relevant protocols, save the rule, and test it to ensure that it works correctly.
Step-by-step explanation:
Configuring a Firewall on a Router
To configure a firewall that blocks incoming traffic to a server on a router, follow these detailed steps:
- Access the router's administrative interface, usually via a web browser by typing the router's IP address.
- Navigate to the firewall settings or security settings section of the router's interface.
- Locate the option to create a new firewall rule or access control list (ACL).
- Set the rule to block incoming traffic. Specify the IP address of the server if the option is available to ensure only traffic to that server is blocked.
- Select the protocol (TCP, UDP, or both) and port numbers that you want to block if necessary.
- Apply or save the new rule. Ensure that the new rule is active and has the correct priority if multiple rules exist.
- Test the new firewall configuration to ensure that it is functioning correctly and blocking the intended traffic to the server.
Keep in mind that these steps may vary slightly depending on the make and model of your router. Consult the router's manual or online documentation for specific instructions related to your device.