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4.1.1.6.4 Extension

An extension is a part of a file name delimited by a period. An extension defines the type and content of a file. This

section of the ThreatSense parameter setup lets you define the types of files to scan.

By default, all files are scanned regardless of their extension. Any extension can be added to the list of files excluded

from scanning. If the Scan all files option is deselected, the list changes to show all currently scanned file extensions.

To enable scanning files without an extension, select the Scan extensionless files option. The Do not scan

extensionless files option becomes available when the Scan all files option is enabled.

Excluding files is sometimes necessary if scanning certain file types prevents the program which is using the extensions

from running properly. For example, it may be advisable to exclude the .edb, .eml and .tmp extensions when using

Microsoft Exchange servers.

Using the Add and Remove buttons, you can allow or prohibit scanning of specific file extensions. Typing an Extension

activates the Add button, which adds the new extension to the list. Select an extension in the list and then click the

Remove button to delete that extension from the list.

The special symbols * (asterisk) and ? (question mark) can be used. The asterisk substitutes any character string, and the

question mark substitutes any symbol. Particular care should be taken when specifying excluded addresses, because

the list should only contain trusted and safe addresses. Similarly, it is necessary to ensure that the symbols * and ? are

used correctly in this list.

To scan the default set of extensions only, click on the Default button and click Yes when prompted to confirm.

4.1.1.6.5 Limits

The Limits section allows you to specify the maximum size of objects and levels of nested archives to be scanned:

Maximum object size – Defines the maximum size of objects to be scanned. The given antivirus module will then scan

only objects smaller than the size specified. This option should only be changed by advanced users who may have

specific reasons for excluding larger objects from scanning. Default value: unlimited.

Maximum scan time for object (sec.) – Defines the maximum time value for scanning of an object. If a user-defined

value has been entered here, the antivirus module will stop scanning an object when that time has elapsed, regardless

of whether the scan has finished. Default value: unlimited.

Archive nesting level – Specifies the maximum depth of archive scanning. Default value: 10.

Maximum size of file in archive – This option allows you to specify the maximum file size for files contained in archives

(when they are extracted) that are to be scanned. Default value: unlimited.

If scanning of an archive is prematurely terminated for these reasons, the archive checkbox will remain unchecked.

Note: We do not recommend changing the default values; under normal circumstances, there should be no reason to

modify them.

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ESET SMART SECURITY 4 - QUICK START GUIDE FOR MICROSOFT WINDOWS 7-VISTA-XP-2000-2003-2008 Guía de usuario Pagina 35