Manual Chapter : Example: Basing step-up authentication on a custom value

Applies To:

  • BIG-IP APM

    21.0.0, 17.5.1, 17.5.0, 17.1.3, 17.1.2, 17.1.1, 17.1.0, 17.0.0, 16.1.6, 16.1.5, 16.1.4, 16.1.3, 16.1.2, 16.1.1, 16.1.0, 15.1.10, 15.1.9

back-action Example: Step-up authentication for an IP address change

Updated Date: 04/30/2026

Example: Basing step-up authentication on a custom value

In this example, the Variable Assign agent stores a value in a predefined custom variable.

In the illustration, Predefined Variables is selected, Group is set to Per-Request Variables, and Variable is set to Scratchpad. An iRule in the Custom Expression field gets the value, which is the client IP address.