What is the best method to transfer existing '/ip firewall filter' configuration from one router to a new system?

The most effective method to transfer the existing '/ip firewall filter' configuration to a new router is to export only the '/ip firewall filter' settings. This approach ensures that you capture all the relevant rules specifically related to the firewall without unnecessary data.

When you export only the '/ip firewall filter', you create a concise and targeted configuration file that includes all the necessary firewall rules in the correct format for import into the new system. This method minimizes the risk of errors that could arise from including unrelated configurations or trying to edit a broader configuration file.

Using this focused export method also allows for greater clarity when reviewing the rules afterward, making it easier to maintain and troubleshoot the firewall configuration in the new router. Additionally, since the context of the environment might differ between the original and the new router, isolating the export to only the firewall rules helps avoid conflicts with other configurations on the new device.

Creating a backup and editing it, or backing up only the specific rules, may introduce complexities or risk losing important details or settings. Therefore, exporting just the '/ip firewall filter' is the most precise and simplest way to achieve the desired outcome.