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26-4
Cisco ASDM User Guide
OL-16647-01
Chapter 26 Configuring Filter Rules
URL Filtering
Add/Edit Parameters for Secure Computing SmartFilter URL Filtering
• Interface—Specifies the interface on which the URL filtering server is connected.
• IP Address—Specifies the IP address of the URL filtering server.
• Timeout—Specifies the number of seconds after which the request to the filtering server times out.
• Protocol area
–
TCP—Uses TCP for communicating with the Secure Computing SmartFilter URL filtering
server.
–
UDP—Uses UDP for communicating with the Secure Computing SmartFilter URL filtering
server.
TCP Connections—Specifies the maximum number of TCP connections allowed for communicating
with the URL filtering server.
Modes
The following table shows the modes in which this feature is available:
Advanced URL Filtering
Fields
URL Cache Size area
After a user accesses a site, the filtering server can allow the security appliance to cache the server
address for a certain amount of time, as long as every site hosted at the address is in a category that
is permitted at all times. Then, when the user accesses the server again, or if another user accesses
the server, the security appliance does not need to consult the filtering server again.
Note Requests for cached IP addresses are not passed to the filtering server and are not logged.
As a result, this activity does not appear in any reports.
• Enable caching based on—Enables caching based on the specified criteria.
• Destination Address—Caches entries based on the URL destination address. Choose this mode
if all users share the same URL filtering policy on the Websense server.
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
• • • •—
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
• • • •—