Cisco Cisco Web Security Appliance S170 Guida Utente
10-15
Cisco AsyncOS for Web User Guide
Chapter 10 Create Policies to Control Internet Requests
Limiting Access by Time of Day
Before you can use create or use URL categories you must enable Acceptable Use Control on the Web
Security appliance.
Security appliance.
Creating Custom URL Categories
Before you begin
•
Enable Acceptable Use Control, see
Step 1
Choose Web Security Manager > Custom URL Categories.
Step 2
Click Add Custom Category.
Step 3
Enter the settings for the custom URL category:
Step 4
(Optional) Click Sort URLs to sort all addresses in the Sites field into alphanumeric order.
Table 10-4
Setting
Description
Category Name
Enter a name for the URL category. This name appears when you configure
URL filtering for policies.
URL filtering for policies.
Note: The Sawmill for reporting tool will not find custom URL categories in
access logs if their names contain spaces in the first four characters.
access logs if their names contain spaces in the first four characters.
List Order
Choose the order in the list of custom URL categories to place this category.
Enter “1” for the topmost URL category.
Enter “1” for the topmost URL category.
The URL filtering engine evaluates a client request against the custom URL
categories in the order specified.
categories in the order specified.
Sites
Enter one or more addresses that belong in the custom category.
You can enter multiple addresses separated by line breaks or commas. You can
enter addresses using any of the following formats:
enter addresses using any of the following formats:
•
IP address, such as 10.1.1.0
•
CIDR address, such as 10.1.1.0/24
•
Domain name, such as example.com
•
Hostname, such as crm.example.com
•
Partial hostname, such as .example.com
Note: Entering a partial hostname, such as .example.com, also matches
www.example.com.
www.example.com.
Note: It is possible to use the same address in multiple custom URL categories,
but the order in which the categories are listed in is relevant. If you include these
categories in the same policy, and define different actions to each one, then the
action of the category listed highest in the custom URL categories table is what
takes effect.
but the order in which the categories are listed in is relevant. If you include these
categories in the same policy, and define different actions to each one, then the
action of the category listed highest in the custom URL categories table is what
takes effect.
Advanced: Regular
Expressions
Expressions
You can use regular expressions to specify multiple web servers that match the
pattern you enter.
pattern you enter.
Note: The URL filtering engine compares URLs with addresses entered in the
Sites field first. If the URL of a transaction matches an entry in the Sites field,
it is not compared to any expression entered here.
Sites field first. If the URL of a transaction matches an entry in the Sites field,
it is not compared to any expression entered here.