Microsoft Windows NT 4.0 Guide Instrukcja Użytkownika Pobierz pdf (Strona 16)

Microsoft

Windows Server

™

2003 White Paper

Windows NT 4.0 Server Upgrade Guide 11

The log file, Sigverif.txt, is stored in the %systemroot% folder by default, and records the following

information about the files it scans:

• Name

• Modification date

• Version number

• Signed status

• Location

Signature Checking

Signature Checking can be enabled by system administrators to ensure that Windows Server

2003 inspects files for digital signatures whenever drivers are installed

Signature Checking has three levels:

• Level 0 disables digital signature checking. The dialog box that identifies a digitally signed driver

does not appear, and all drivers are installed whether they are signed or not.

• Level 1 determines whether the driver has passed WHQL testing. A message appears whenever

a user tries to install a driver that fails the signature check.

• Level 2 blocks installation of a driver that fails the signature check. The user is notified that the

driver cannot be installed because it is not digitally signed.

You can activate the Signature Checking feature by using the Hardware tab of the System

Properties dialog box.

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Microsoft Windows NT 4.0 Guide Instrukcja Użytkownika Strona 16