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Cisco Router and Security Device Manager 2.5 User’s Guide
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Chapter 38 URL Filtering
URL Filtering Window
Audit Trail
Check this box to enable the router to maintain an audit trail in the log. The router
will record URL request status messages that indicate whether an HTTP request
has been permitted or denied and other audit trail messages. This option is
disabled by default.
URL Filter Server Log
Check this box to enable the router to record system messages that pertain to the
URL filter server in the log. This option is disabled by default.
Cache Size
You can set the maximum size of the cache that stores the most recently requested
IP addresses and their respective authorization status. The default size of this
cache is 5000 bytes. The range is from 0 bytes to 2147483647. The cache is
cleared every 12 hours.
Maximum buffered HTTP requests
You can set the maximum number of outstanding HTTP requests that the router
can buffer. By default, the router buffers up to 1000 requests. You can specify
from 1 to 2147483647 requests.
Maximum buffered HTTP responses
You can set the number of HTTP responses from the URL filtering server that the
router can buffer. After this number is reached, the router drops additional
responses. The default value is 200. You can set a value from 0 to 20000.
General Settings for URL Filtering
Name the URL filter, specify what the router is to do when it detects a match, and
configure log and cache size parameters. You can also specify a source interface
if you do not want the URL filtering parameter map to apply to all router
interfaces.