Cisco OL-4015-08 User Manual page 158

Edit Firewall Policy/ACL
Originating Traffic—Click this to highlight the part of the diagram that
represents the traffic flow that enters the router at the From interface and exits the
router at the To interface. When this area is highlighted, you can see the details
of the rules applied in the direction of traffic flow.
Returning Traffic—Click this to highlight the part of the diagram that represents
returning traffic. When this area is highlighted, you can see the details of the rules
applied to traffic that enters the router on the To interface and exits the router on
the From interface.
Icons—Rules are represented by icons in the traffic flow:
Cisco Router and Security Device Manager Version 2.2 User's Guide
6-4
The filter symbol indicates that an access rule has been applied.
A magnifying glass signifies that an inspection rule has been applied.
The firewall icon in the router indicates that a firewall has been applied
to the Originating traffic flow. SDM displays a firewall icon if the
following sets of criteria are met:
There is an inspection rule applied to Originating traffic on the
•
inbound direction of the From interface, and there is an access rule
applied to the inbound direction of the To interface.
The access rule on the inbound direction of the To interface is an
•
extended access rule, and contains at least one access rule entry.
No firewall icon is displayed when a firewall has been applied to
Returning traffic. If the Firewall feature is available, but no firewall has
been applied to the traffic flow, IOS Firewall: Inactive will be
displayed underneath the traffic diagram.
Chapter 6 Firewall Policy
OL-4015-08