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CHAPTER
13-1
Cisco ASA 5500 Series Configuration Guide using the CLI
13
Configuring Objects
Objects are reusable components for use in your configuration. They can be defined and used in ASA
configurations in the place of inline IP addresses. Objects make it easy to maintain your configurations
because you can modify an object in one place and have it be reflected in all other places that are
referencing it. Without objects you would have to modify the parameters for every feature when
required, instead of just once. For example, if a network object defines an IP address and subnet mask,
and you want to change the address, you only need to change it in the object definition, not in every
feature that refers to that IP address.
This chapter describes how to configure objects, and it includes the following sections:
• Configuring Objects and Groups, page 13-1
• Configuring Regular Expressions, page 13-12
• Scheduling Extended Access List Activation, page 13-16
Configuring Objects and Groups
This section includes the following topics:
• Information About Objects and Groups, page 13-1
• Licensing Requirements for Objects and Groups, page 13-2
• Guidelines and Limitations for Objects and Groups, page 13-3
• Configuring Objects, page 13-3
• Configuring Object Groups, page 13-6
• Monitoring Objects and Groups, page 13-11
• Feature History for Objects and Groups, page 13-12
Information About Objects and Groups
The ASA supports objects and object groups. You can attach or detach objects from one or more object
groups when needed, ensuring that the objects are not duplicated but can be re-used wherever needed.
This section includes the following topics:
• Information About Objects, page 13-2