Inglês

Atenção: As questões de números 57 a 60 baseiam-se no

texto apresentado abaixo.

Firewalls: Software

A firewall is a lock on your PC's connection to the Internet.

When you receive an alert asking whether to let an application

access the Internet, you're really being asked whether or not

you're willing to give that application a key to the lock, so it's

critical that you answer correctly. There is almost always an

event that you initiated that coincides with an alert, such as

launching a program or issuing a command like Check for Updates.

The alert may give you an explanation of the program if the

firewall recognizes it. If not, the alert should still at least tell you

the filename and path of the program that's trying to access the

Internet. This should give you a clue to what the program is. If

your firewall doesn't tell you the path, use Windows' Search tool

to find it. If you don't recognize the program, go to Google and

search on the filename for more information before granting

permission.

If you're still unsure, refuse the connection this one time

and see what happens. If you think it's probably safe, allow the

connection for one time and see what happens. If you can't tell

what it's doing, consider doing a one-time block on the app the

next time you get a request and see if any familiar program

barks at you that it can't get to the Internet. If your personal

firewall doesn't show you the path or let you grant one-time

permission, consider getting a better firewall.

By Ben Z. Gottesman. August 3, 2004

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