Cisco Cisco Web Security Appliance S170 ユーザーガイド

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Cisco IronPort AsyncOS 7.7 for Web User Guide
Chapter 17      URL Filters
Managing Updates to the Set of URL Categories
Controlling Updates to the URL Category Set 
By default, URL category set updates occur automatically. However, because these updates may change 
existing policy configurations, you may prefer to disable all automatic updates, including URL category 
set updates. 
If you disable updates, you will need to manually update all services listed in the Update Servers (list) 
section of the System Administration > Upgrade and Update Settings page. See 
To disable all automatic updates, see 
. If you 
use the CLI, disable updates by setting the update interval to zero (0). 
Manually Updating the URL Category Set 
Note
Do not interrupt an update in progress. 
If you have disabled automatic updates, you can manually update the set of URL categories at your 
convenience.
Step 1
Navigate to the Security Services > Acceptable Use Controls page. 
Step 2
Determine whether an update is available: 
Warn Block 
Monitor 
Thus, use the least restrictive among the original 
categories. 
Warn
Monitor
  •
Block or 
  •
Use Global Settings, 
when Global is set to Block
  •
Block or 
  •
Use Global Setting, when Global is set to 
Block 
Thus, use the most restrictive among the original 
categories. 
Block
Block 
  •
Monitor or 
  •
Use Global Settings,  
when Global is set to Monitor 
  •
Monitor or 
  •
Use Global Setting, when Global is set to 
Monitor 
Thus, use the least restrictive among the original 
categories. 
Monitor 
For policies in 
which membership 
is defined by URL 
category: 
Monitor 
An action for this category is not 
specified in this policy, but the 
value in the Global Policy for this 
category is Block 
An action for Uncategorized URLs is not 
specified in this policy, but the value in the 
Global Policy for Uncategorized URLs is 
Monitor 
Monitor
Table 17-2
Example Outcomes When Categories Merge  
Original Category 1 Original Category 2
Uncategorized URLs 
Merged Category