Cisco Cisco Email Security Appliance C170 Guia Do Utilizador
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Cisco AsyncOS 8.5.5 for Email Security User Guide
Chapter 15 URL Filtering
Setting Up URL Filtering
•
If URL filtering is enabled at group level, URL whitelists must be configured at group or cluster
level.
level.
•
If URL filtering is enabled at cluster level, URL whitelists must be configured at cluster level.
•
The standard rules for clusters for Message Filters and Content Filters apply.
Creating Whitelists for URL Filtering
If you specify a global whitelist when configuring the URL Filtering feature, then URLs on the whitelist
are not evaluated for reputation or category, for anti-spam, Outbreak Filtering, or content and message
filtering. However, the messages that contain these URLs are evaluated as usual by anti-spam scanning
and Outbreak Filters. You can also specify a URL whitelist in each URL Filtering condition (rule) and
action in content and message filters, to supplement the global URL whitelist.
are not evaluated for reputation or category, for anti-spam, Outbreak Filtering, or content and message
filtering. However, the messages that contain these URLs are evaluated as usual by anti-spam scanning
and Outbreak Filters. You can also specify a URL whitelist in each URL Filtering condition (rule) and
action in content and message filters, to supplement the global URL whitelist.
To whitelist URLs from Outbreak Filtering generally, use the Bypass Domain Scanning option that you
configure on the Mail Policies: Outbreak Filters page. URL whitelists for URL filtering are similar to,
but independent of, Bypass Domain Scanning. For more information about that feature, see
configure on the Mail Policies: Outbreak Filters page. URL whitelists for URL filtering are similar to,
but independent of, Bypass Domain Scanning. For more information about that feature, see
There is no relationship between URL filtering whitelists described in this section and the whitelist used
for sender reputation filtering based on SBRS score.
for sender reputation filtering based on SBRS score.
Before You Begin
Consider importing a list of URLs instead of creating one in the web interface. See
.
Procedure
Step 1
Select Mail Policies > URL Lists.
Step 2
Select Add URL List or click a list to edit.
Be sure all URLs that you want to globally whitelist are in a single list. You can select only one global
whitelist for URL filtering.
whitelist for URL filtering.
Step 3
Create and submit the URL list.
To view a list of supported URL formats, enter a semicolon (;) into the URLs box and click Submit.
Then click the more... link that appears.
Then click the more... link that appears.
Each URL, domain, or IP address can be on a separate line, or separate each with a comma.
Step 4
Commit your changes.
What To Do Next
•
•
To designate a URL list as the whitelist for a specific condition (rule) or action in a content or
message filter, see
message filter, see
. For message filters, see also
.