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Cisco Router and Security Device Manager 2.5 User’s Guide
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Rules define how the router will respond to a particular kind of traffic. Using
Cisco SDM, you can create access rules that cause the router to block certain types
of traffic while permitting other types, NAT rules that define the traffic that is to
receive address translation, and IPSec rules that specify which traffic is to be
encrypted. Cisco SDM also provides default rules that are used in guided
configurations, and that you can examine and use when you create your own
access rules. It also allows you to view rules that were not created using Cisco
SDM, called external rules, and rules with syntax that Cisco SDM does not
support, called unsupported rules.
Use the Rules screen to view a summary of the rules in the router’s configuration
and to navigate to other windows to create, edit, or delete rules.

Category

A type of rule. One of the following:
Access Rules Rules that govern the traffic that can enter and
leave the network. These rules are used by router
interfaces, and by VTY lines that let users log on
to the router.
NAT Rules Rules that determine how private IP addresses are
translated into valid Internet IP addresses.
IPSec Rules Rules that determine which traffic will be
encrypted on secure connections.