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Problem this snippet solves:

This Solution will act as a Web Form Application protection layer against malicious entities such as automated bots.

This is split into two iRules, the first will perform the actual protection while the second will server an admin console to allow you to look at the internals of the data groups and session tables. The solution attempts to solve the following requirements:

  • Uniquely identify users
  • Verify that requests follow the correct application flow (ie, the user can’t jump direction to a form submission without first going through the actual form first).
  • Incorporate rate limiting/blocking so that valid users (or bots that have worked their way around #2) can’t issue repetitive valid requests in an abusive manner.
  • Provide an administration console to be able to monitor the status of requests.

For more details, see the accompanying article coming to DevCentral in the near future.