McAfee VIRUSSCAN ENTERPRISE Guía de usuario descargar pdf (Pagina 19)

Part I - Prevention: Avoiding Threats

Prevention is the first step in a protection strategy, to keep threats from gaining access to your

system.

Contents

Access protection

Protecting your system access points

Blocking buffer overflow exploits

Restricting potentially unwanted programs

Updating detection definitions

Excluding scan items

Using scheduled tasks

Access protection

Preventing threat access to your client system is your first line of defense against malware. The

Access Protection feature of VirusScan Enterprise compares an action being requested against

a list of configured rules. Each rule can be configured to block or report, or block

and

report

access violations when they occur.

Access protection prevents unwanted changes to your computer by restricting access to specified

ports, files, shares, registry keys, and registry values. It also protects McAfee processes by

preventing users from stopping them. This protection is critical before and during outbreaks.

This feature uses predefined rules and user-defined rules to specify which items can and cannot

be accessed. Each rule can be configured to block or report, or block and report access violations

when they occur. Predefined rules and categories can be updated from the McAfee update sites.

NOTE: The on-access scanner, which detects access violations, must be enabled to detect

attempts to access ports, files, shares, and registry keys and registry values.

How threats gain access

The most common ways threats gain access to your system include:

• Macros — As part of word processing documents and spreadsheet applications.

• Executable files — Seemingly benign programs can include viruses along with the expected

program. For example, some common file extensions are .EXE, .COM, .VBS, .BAT, .HLP and

.DLL.

• Email — Jokes, games, and images as part of email messages with attachments.

• Scripts — Associated with web pages and emails, scripts such as ActiveX and JavaScript,

if allowed to run, can include viruses.

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McAfee VIRUSSCAN ENTERPRISE Guía de usuario Pagina 19