Symptoms

In some web applications, the navigation flow may break (connection reset) if a main URL (login page, for example) is responding with a content that is not an HTML one, or if the response is dynamic, and occasionally not an HTML one.

Impact

Users may experience a connection reset while navigating through the website, usually after several minutes.

Conditions

Proactive Bot Defense is enabled on a DOS profile that is attached to a Virtual Server, and one of the main URLs of the web application (login page, home page, etc.) occasionally responds with a non-HTML content, blank content, or redirect response with no body.

Workaround

None

Fix Information

Connection resets are no longer experienced on normal web navigation of a site that is protected by the Proactive Bot Defense mechanism, and one of the main pages of the web application occasionally responds with a non-HTML content.

Behavior Change