how do i enable Data Execute Prevention in sp2?

how do i enable Data Execute Prevention in sp2. i cant figure out how to turn it on or is it on by default or what.

FNK · 09-05-2004, 22:34 | posts: 2,751 | Location: Quebec, Canada

I did many tweak, but what's " Data Execute Prevention " ?

09-05-2004, 22:39 | posts: n/a

u talking this?
http://www.tech-recipes.com/windows_tips566.html

Description
No-execute and execute protection are all names for DEP. This process feature increases security, but may cause problems with certain programs.

Directions
Several OSs have no-execute or execute protection. Microsoft has added this as well in SP2 with data execution prevention (DEP). This precents code execution in memory regions already marked as storage. This is a powerful tool against buffer overrun exploits.

If a program is failing and you want to disable DEP to see if that is the cause. Here are the steps. (Just disable DEP for the program in question... don't disable it for your whole system.)

1. Click Start
2. Select Control Panel
3. Select System
4. Click the Advanced tab
5. In the Performance region select Settings
6. Click the Data Execute tab in the dialog box that opens
7. Select Turn on DEP for all programs and services except for those I select
8. Click Add.
9. The open dialog box will open. Browse and select your application.
10. Click Open
11. Click Apply
12. Click Ok
13. Reboot

09-05-2004, 22:41 | posts: n/a

another thing mike learn how to use google

09-06-2004, 22:06 | posts: n/a

what programs should i exclud

David · 09-06-2004, 22:30 | posts: 3,396 | Location: Kansas

Don't exclude anything, unless it is software you are installing and you know it won't function properly with DEP enabled.

09-07-2004, 18:26 | posts: n/a

and why u ask such questions if u dont even know wat to do with it?

Moridin · 09-11-2004, 14:49 | posts: 17 | Location: Switzerland

Also, check your boot.ini file (open with wordpad or notepad)...it should look similar to this:

Code:

[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(1)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(1)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect /NoExecute=OptIn
multi(0)disk(0)rdisk(1)partition(2)\WINDOWS="Microsoft Windows XP Professional x86_64" /fastdetect

Moridin

omniscientist · 09-13-2004, 18:02 | posts: 1,012 | Location: Minneapolis, Minnesota

Excuse my ignorance, but even though SP2 might have buffer overflow prevention, I thought you would need to take full advantage of the x86-64's architecture to run this feature, thus needing a 64 bit OS and getting that LMA mode running. But if it works with SP2 what does this mean?

Festyr · 09-13-2004, 18:15 | posts: 129 | Location: In A House Some Where.

A 64bit OS is not needed to get the DEP function to work. Only a 64bit cpu like the a64 is needed since it has NX built into the chip.