You use the Rules tab (Config Management > Policy Design Center > Rules tab) to create and manage rules that are referenced in policies. Policies cannot operate without at least one Rule. All factory-defined rules in this page are read-only. You can also define your own custom rules, using your choice of editing tools.
Rules provide substantial extensions in capabilities for XML rule creation. For more information, see the following subsection, Policy Rule XML Capabilities.
Rule editing features are enabled only when creating a new rule. All other Rules are read-only and can be used only to create new Rules.
Rules are the critical element in building all Policies. To build Rules effectively, Infoblox recommends detailed knowledge of the given networking technologies or protocols involved in defining the rule.
Also, see Additional Rule Examples for information showing how rules appear in practice.
For a selected rule, check Used in these policies at the bottom of the center panel to see which policies reference the rule.