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What is the minimum processor speed required

Because XD/NX uses memory tagging, there is no minimum processor speed required for XD/

NX to function. The minimum speed XD processor that Intel has released is the 325J Celeron that 

runs at 2.53GHz.
Currently, all AMD Athlon 64 processors support NX.

Will this affect remote users on my network?

As long as software is properly developed, remote users will not be affected.

What is a shim?

A shim is a small piece of software added to a program to provide an enhancement.

© 2005 Hewlett-Packard Development Company, L.P. The information contained herein is subject to change without notice. The 

only warranties for HP products and services are set forth in the express warranty statements accompanying such products and 

services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or 

editorial errors or omissions contained herein.

HP, Hewlett Packard, and the Hewlett-Packard logo are trademarks of Hewlett-Packard Company in the U.S. and other countries.
Compaq and the Compaq logo are trademarks of Hewlett-Packard Development Company, L.P. in the U.S. and other countries.
Microsoft, MS-DOS, Windows, and Windows NT are trademarks of Microsoft Corporation in the U.S. and other countries.
Intel, Pentium, Intel Inside, and Celeron are trademarks of Intel Corporation in the U.S. and other countries.

This document contains proprietary information that is protected by copyright. No part of this document may be photocopied, 

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380248-002, 05/2005

Содержание xw4200

Страница 1: ...om virus attacks 5 What are the required components for XD NX to function 5 How do I control the DEP functionality on my computer 8 DEP Level Chart 9 Data Execution Prevention Tab No XD NX Processor 1...

Страница 2: ...e European Commission in Brussels to name a few Microsoft s Windows XP Service Pack 2 includes multiple security improvements Network protection Memory protection Email handling Web browsing security...

Страница 3: ...helps prevent these attacks by intercepting them and displaying the DEP message box Hardware enforced DEP relies on processor hardware to mark memory with an attribute that indicates that code should...

Страница 4: ...ed for arith metic calculations or to keep track of internal operations In normal system operations code is not typically executed from the default heap and stack Hardware enforced DEP detects code th...

Страница 5: ...essors for the desktop market starting with the E0 stepping of the Prescott Pentium 4 processor Both Intel Pentium 4 and Celeron processors have XD support Using Intel s new pro cessor naming scheme a...

Страница 6: ...stems Default NX support is disabled for Transmeta systems The BIOS for Intel 915 and Intel 945 based desktop systems uses the CPUID instruction to look for the Exe cute Disable bit to determine if XD...

Страница 7: ...essors in the following product line not all systems available in all regions dx5150 The BIOS for the bc1000 disables NX support for the Transmeta processor There is no option to enable NX The followi...

Страница 8: ...d to a program to provide an enhancement and installing it with the application All program and services except those I select This option equates to the OptOut policy which allows a user to select ap...

Страница 9: ...Off No hardware or software enforced DEP is available for any part of the system The processor will not run in PAE mode unless a PAE switch is present in the BOOT INI OptIn Default Hardware and softw...

Страница 10: ...event Windows XP SP2 from using DEP set the operating system to alwaysoff in the BOOT INI file Software Enforced DEP Software enforced DEP is a set of DEP security checks built into Windows XP SP2 tha...

Страница 11: ...nd software enforced DEP Unfortunately at this time you can only test hardware enforced DEP because Microsoft has not yet supplied the tools to test software enforced DEP You can test hardware enforce...

Страница 12: ...em when it expects a 32 bit PTE but instead gets a 64 bit PTE Driver cannot DMA properly with a 64 bit physical addresses To a lesser extent some drivers create code in real time These drivers encount...

Страница 13: ...ATI Catalyst Control Center Exception error Add to exclusion list ATI Driver Setup exe Exception error during installation Add to exclusion list Broadcom Management Apps Exception error Add to exclusi...

Страница 14: ...Add to exclusion list Microsoft Office Pro 2003 Exception error Add to exclusion list Microsoft Office SB 2003 Exception error Add to exclusion list Norton Anti Virus Exception error Add to exclusion...

Страница 15: ...ve afterwards Windows Catalog Exception error Add to exclusion list Driver Effect Creative Audigy 2NX Exception error during installation Add to exclusion list HP Deskjet 450ci Driver Prints out blank...

Страница 16: ...ns a buffer with code and then executes this code Unlike a firewall or antivirus program DEP does not help prevent harmful programs from being installed on your computer Instead it monitors your progr...

Страница 17: ...applications or drivers that attempt to execute out of data memory You should test your images before deploying XD NX If a problem does occur with an application driver associated with a trusted softw...

Страница 18: ...e same methods you use to protect all operating system and BIOS settings For example you can use Setup passwords to control who can change items in F10 Setup Also you can allow only users with adminis...

Страница 19: ...nging is the chipset changing as well For Intel based systems newer chipsets starting with the i915 chipset provide support for XD Will the system board change with the processor change Intel chipset...

Страница 20: ...ly test software enforced DEP HP encourages you to perform your own validation if you plan to use your own image or proprietary software What does it mean when XD NX is disabled but the DEP is set for...

Страница 21: ...vices Nothing herein should be construed as constituting an additional warranty HP shall not be liable for technical or editorial errors or omissions contained herein HP Hewlett Packard and the Hewlet...

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