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Cisco Router and Security Device Manager 2.5 User’s Guide
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Chapter8 Create Firewall
Advanced Firewall Configuration Wizard
Domain Name Server Configuration
The router must be configured with the IP address of at least one DNS server for
application security to work. Click Enable DNS-based hostname-to-address
translation, and provide the IP address of the primary DNS server. If a secondary
DNS server is available, enter it’s IP address in the Secondary DNS Server field.
The IP addresses that you enter will be visible in the DNS Properties window
under Additional Tasks.
URL Filter Server Configuration
URL filter servers are capable of storing and maintaining much more URL
filtering information than a router configuration file can contain. If there are URL
filter servers on the network, you can configure the router use them. You can
configure additional URL filter server parameters by going to Configure >
Additional Task s > URL Filtering. See URL Filtering for more information.

Filter HTTP Request through URL Filter Server

Check the Filter HTTP Request through URL Filter Server box to enable URL
filtering by URL filter servers.

URL Filter Server Type

Cisco SDM supports the Secure Computing and Websense URL filter servers.
Choose either Secure Computing or Websen se to specify the type of URL filter
server on the network.
IP Address/Hostname
Enter the IP address or the hostname of the URL filter server.
Select Interface Zone
This window appears if a router interface other than the one you are configuring
is a member of a Zone-Based Policy Firewall security zone. For more information
about this topic, see Zone-Based Policy Firewall.