Cisco Cisco Email Security Appliance C170 Guia Do Utilizador

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AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide
 
Chapter 21      Text Resources
  Content Dictionaries
You can also create your own dictionary files and import them onto the appliance. The best way to add 
non-ASCII characters to dictionaries is to add the terms into the dictionary in a text file off the appliance, 
move that file onto the appliance, and then import that file as a new dictionary. For more information 
about importing dictionaries, see 
. For information about exporting 
dictionaries, see 
Caution
These text files contain terms that some persons may consider obscene, indecent or offensive. If you 
import terms from these files into your content dictionaries, the terms will be displayed when you later 
view the content dictionaries you have configured on the appliance.
Adding Dictionaries
Procedure 
Step 1
Navigate to the Mail Policies > Dictionaries page.
Step 2
Click Add Dictionary.
Step 3
Type a name for the dictionary.
Step 4
(Optional) Configure Advanced Matching.
Note
AsyncOS preserves the Match Whole Words and Case Sensitive settings when you save them 
in the configuration file. AsyncOS does not preserve these settings when importing and 
exporting dictionaries.
Step 5
(Optional) Add a smart-identifier to the dictionary. 
Smart identifiers are algorithms that search for patterns in data that correspond to common numeric 
patterns, such as social security numbers and ABA routing numbers. For more information about smart 
identifiers, see the “Using Message Filters to Enforce Email Policies” chapter.
Step 6
Enter new dictionary entries into the list of terms. 
If you have multiple new entries to add, and you want them to be equally likely trigger a filter action, 
put each new term on its own line.
Note
Content dictionary entries with the regular expression: “
.*
” at the beginning or end will cause 
the system to lock if a match for the “word” MIME part is found. Cisco Systems recommends 
you do not use “
.*
” at the beginning or end of a content dictionary entry.
Step 7
Specify a weight for the term(s). 
You can “weight” a dictionary term so that it is more likely than other terms to trigger a filter action. For 
more information about how this weight is used to determine filter actions, see “Threshold Scoring for 
Content Dictionaries” in the “Using Message Filters to Enforce Email Policies” chapter.
Step 8
Click Add.
Step 9
Submit and commit your changes.
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