Cisco Cisco Email Security Appliance C650 Guía Del Usuario
Chapter 6 Email Security Manager
6-198
Cisco IronPort AsyncOS 7.1 for Email Configuration Guide
OL-22158-02
outgoing mail policy tables manage which content filters are enabled the order in
which they will be applied for any given policy.
which they will be applied for any given policy.
lists the available
conditions you can use to create a content filter.
lists the non-final and
final actions you can use to define a content filter. Together, conditions and action
constitute a content filter.
constitute a content filter.
shows the action variables you can use when
creating content filters.
Content Filter Conditions
Specifying conditions in content filters is optional.
In the content filter conditions, when you add filter rules that search for patterns
in the message body or attachments, you can specify the minimum threshold for
the number of times the pattern must be found. When AsyncOS scans the
message, it totals the “score” for the number of matches it finds in the message
and attachments. If the minimum threshold is not met, the regular expression does
not evaluate to true. You can specify this threshold for text, smart identifiers, or
content dictionary terms.
in the message body or attachments, you can specify the minimum threshold for
the number of times the pattern must be found. When AsyncOS scans the
message, it totals the “score” for the number of matches it finds in the message
and attachments. If the minimum threshold is not met, the regular expression does
not evaluate to true. You can specify this threshold for text, smart identifiers, or
content dictionary terms.
You can also use “smart identifiers” to identify patterns in data. Smart identifiers
can detect the following patterns:
can detect the following patterns:
•
Credit card numbers
•
U.S. Social Security numbers
•
CUSIP (Committee on Uniform Security Identification Procedures) numbers
•
ABA (American Banking Association) routing numbers
For more information about specifying a minimum threshold for the number of
times a pattern must be found, and smart identifiers, see the “Using Message
Filters to Enforce Email Policies” chapter in the Cisco IronPort AsyncOS for
Email Advanced Configuration Guide.
times a pattern must be found, and smart identifiers, see the “Using Message
Filters to Enforce Email Policies” chapter in the Cisco IronPort AsyncOS for
Email Advanced Configuration Guide.