system captcha-puzzle
Use this command to configure the difficulty level of Puzzle CAPTCHA challenges used in bot confirmation workflows. Puzzle CAPTCHA presents an image-based challenge that requires human interaction and helps prevent access by bots and headless browsers.
This command controls the system-wide difficulty setting for all Puzzle CAPTCHA challenges. Higher difficulty levels reduce the visual contrast between the puzzle piece and the background image, making the challenge harder for bots. The image content itself is not customizable.
To use this command, your administrator account’s access control profile must have both r and w permissions to items in the admingrp category.
Syntax
config system captcha-puzzle
set captcha-puzzle-difficulty-level {easy | medium | hard}
end
| Variable | Description | Default |
|---|---|---|
| captcha-puzzle-difficulty-level {easy | medium | hard} |
Specifies the visual complexity of the Puzzle CAPTCHA challenge:
|
medium |


