How to Protect Your Site with a Captcha

A walkthrough on how to set and use the Challenge User action in a web control

Web Controls enable site administrators to use pre-defined, pre-tested security or performance rulesets based on their e-commerce application, minimizing the need to discover, define, and maintain the rules themselves. You can create individual rules that match request conditions and execute a set of actions you define in your Webscale Control Panel.

A useful action to add to a web control is the Challenge User action. This action will present users that match the Condition specified with a Google ReCaptcha they must solve to prove they are not a bot. A previously validated user is not presented with a challenge. An example of when to use this type of web control is if you are seeing elevated malicious or suspicious behavior on your site, or if you have a list of IPs that you already know to be malicious.

Create the Challenge User Action

Click + Add action to create an action for the new Web Control, which opens the Create Action dialog. To proceed, click Select an Action.

Webscale Create Action dialog in the control panel

A list of actions is now displayed. Select Challenge User and click the Done button to return to the Edit Web Control screen. Remember that you can add more than one action. Note that all actions specified are run, but there is no implied order.

When a condition is met, then all specified actions are applied to the request. You can only choose one final action. Final actions run last; the order of execution of other actions is unspecified and not necessarily in the order displayed.

Further Reading

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Last modified July 21, 2020