For people who have used windows, few people are unaware of the Ctrl+alt+del key combination, especially when using a frequently frozen windows9x, which is a key combination of emergency exits specifically for system security. VC Knowledge Base Online magazine 11th, Ac952_z_cn wrote in his personal column about this article: "How to block
In Windows 9X/2000/XP, most of us use the Alt+ctrl+del key combination to open Task Manager, in Windows 2000/XP we have a choice: Shift+ctrl+esc. However, in Windows XP, the functions of these two combination hotkeys are different:
(1) In any case, using the SHIFT+CTRL+ESC k
How to block CTRL + ALT + DEL in Windows NT/2000Author: ac952_z_cn
PrefaceIn Windows 9x, we can use systemparametersinfo (spi_screensaverrunning, 1, null, 0); To block CTRL + ALT + DEL, but it does not work in NT/2000,
Disable the system restart function by pressing Ctrl-Alt-Del in RHEL/CentOS 5/6
In Linux, for security considerations, we allow anyone to press Ctrl-Alt-Del to restart the system. However, in the production environment, press
Turn off the action Association for Ctrl+alt+del Auto RestartThis operation must be done, or there is an accident really is not even cry, Linux this really pit dad, do not login, directly press Ctrl+alt+del can restart the server?
CentOS disables pressing Ctrl-Alt-Del to restart the system
In Linux, for security considerations, we allow anyone to press Ctrl-Alt-Del to restart the system. However, in the production environment, press
The ctrl + alt + del key combination function is set in the/etc/inittab file. The iniitab file contains the following two lines:
# Trap CTRL-ALT-DELETE
Ca: ctrlaltdel:/sbin/shutdown-t3-r now
Pressing ctrl +
The system prompts "ntldris missing, press CTRL + ALT + DEL to restart". Press the prompt to restart the system. The data shows that the ntldris file is a boot file of Win NT/win200/WINXP. When this file is lost, the system will prompt
"Ntldris missing, press CTRL + ALT +
Disable Ctrl + Alt + Del Restart for CentOS
Prevents Misoperation and restart in the actual production environment
1. CentOS5.X do not press Ctrl + Alt + Del to restart at the same time
Edit/etc/inittab
Find
CAS: 12345: ctr
Prevent misoperation Restart in real production environmentsFirst, centos5.x prohibit simultaneous press Ctrl+alt+del restartEdit/etc/inittabFound itCa:12345:ctrlaltdel:/sbin/shutdown-t1-a-R NowChange to#ca: 12345:ctrlaltdel:/sbin/shutdown-t1-a-R nowOr delete the found row, save the exit;Second, centos6.x prohibit simultaneous press
Ubuntu Ctrl + Alt + Del displays the settings of GNOME system monitor in Windows NT, 2000, XP, and Vista. If you press Ctrl + Alt + Del, "Windows Task Manager" appears ". In Ubuntu, this key combination will close the system windo
One, Widows2003 power-on Cancel Press Ctrl+alt+del
1. Click the Windows start key → admin tools → local security policy (pictured below)
2. Local security settings → Local policies → security options
3. Security options → Right → find this file (interactive login does not need to press Ctrl+
windows95/98 How do I hide an application and not let it appear in the Ctrl-alt-del dialog box?
An easy way to hide your application from the Ctrl-alt-del dialog box is to go to the application title. If the main window of a prog
Test environment:
CentOS5.X
Centos6.X
1. CentOS5.X do not press Ctrl + Alt + Del to restart at the same time
Edit/etc/inittab
Find
CAS: 12345: ctrlaltdel:/sbin/shutdown-t1-a-r now
Change
# Ca: 12345: ctrlaltdel:/sbin/shutdown-t1-a-r now
Or delete the row. Save and exit;
Ii. CentOS6.X do not press Ctrl +
Error description:
Windows Server 2008 R2 operating system,
Desktop ThinkCentre M8400T
Today, the following two lines are prompted:
DQACP is missing
Press Ctrl + Alt + Del to Restart
The DQACP file is lost. Press Ctrl + Alt + Del
A, the first press Ctrl+alt+del after 60 seconds and then invalid, after the execution of the N-multi-information collection operations will be the firewall deactivated, sshd service restart;
b, if still not connected to the server, then continue to let the engine room engineer Press Ctrl+
Error Description:
Windows Server 2008 R2 operating system,
Desktop ThinkCentre m8400t
Today the boot suddenly prompts the following two lines:
DQACP is missing
Press Ctrl+alt+del to restart
It means: DQACP file is missing, restart by Ctrl+alt+
As you know, Ctrl+alt+del is the win2k/nt OS default system login/logoff combination key sequence, the system level is very high. In the application, it is quite difficult to block out the response to the key sequence or to get the "down" event. This paper introduces a simple and easy way to realize that after the user login succeeds, press
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