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20140818 Disable reboot using Ctrl-Alt-Del Keys in RHEL or CentOS
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2q1w2007 2014-09-15 21:50:36 +08:00
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2q1w2007翻译中
Disable reboot using Ctrl-Alt-Del Keys in RHEL / CentOS
在RHEL / CentOS下停用按下Ctrl-Alt-Del 重启系统的功能
================================================================================
In Linux , It's a security concern for us to allow anyone to **reboot** the server using **Ctrl-Alt-Del keys**. It is always recommended in production boxes that one should disable reboot uisng Ctrl-Alt-Del keys.
In this article we will discuss how can we disable reboot via above keys in RHEL & CentOS
在Linux里，由于对安全的考虑，我们允许任何人按下**Ctrl-Alt-Del**来**重启**系统。但是在生产环境中，应该停用按下Ctrl-Alt-Del 重启系统的功能。
### For RHEL 5.X & CentOS 5.X ###
在这篇文章里，我们将要介绍如何在RHEL和CentOS下停用该热键。
To prevent the **init** process from handling **Ctrl-Alt-Del**, edit the file '**/etc/inittab**' comment the line which begins with '**ca::ctrlaltdel**:' as shown below :
### 在RHEL 5.X和CentOS 5.X下 ###
保护**init**进程免于**Ctrl-Alt-Del**,像下面一样编辑'**/etc/inittab**'里由'**ca::ctrlaltdel**:'开头的一行:
[root@localhost ~]# cat /etc/inittab
# Trap CTRL-ALT-DELETE
#ca::ctrlaltdel:/sbin/shutdown -t3 -r now
We can also modify the line 'ca::ctrlaltdel:' to generate logs , if anybody try to reboot the server using the keys ,
我们还可以改变'ca::ctrlaltdel:'这行来输出日志 ,如果任何人想用该热键重启服务器,就会有日志,
[root@localhost ~]# cat /etc/inittab
# Trap CTRL-ALT-DELETE
ca::ctrlaltdel:/bin/logger -p authpriv.warning -t init "Console-invoked Ctrl-Alt-Del was ignored"
### For RHEL6.X & CentOS 6.X ###
### 在RHEL6.X和CentOS 6.X下 ###
In RHEL 6.X / CentOS 6.X , reboot using the keys are handled by the file '**/etc/init/control-alt-delete.conf**'.
在RHEL6.X和CentOS 6.X下, 该热键的行为由'**/etc/init/control-alt-delete.conf**'控制.
**Step:1** Before making the changes , first take the backup using below command
**第一步** 在变化之前，先用下列命令备份配置
[root@localhost ~]# cp -v /etc/init/control-alt-delete.conf /etc/init/control-alt-delete.override
**Step:2** Edit the file , replacing the 'exec /sbin/shutdown' line with the following, which will simply generate a log entry each time Ctrl-Alt-Del is pressed:
**第二步**编辑文件，把'exec /sbin/shutdown'这一行用下方配置代替，这个配置会在每次按下Ctrl-Alt-Del 时输出日志:
[root@localhost ~]# cat /etc/init/control-alt-delete.conf
exec /usr/bin/logger -p authpriv.notice -t init "Ctrl-Alt-Del was pressed and ignored"
@ -37,7 +36,7 @@ In RHEL 6.X / CentOS 6.X , reboot using the keys are handled by the file '**/etc
via: http://www.linuxtechi.com/disable-reboot-using-ctrl-alt-del-keys/
作者：[Pradeep Kumar][a]
译者：[译者ID](https://github.com/译者ID)
译者：[2q1w2007](https://github.com/2q1w2007)
校对：[校对者ID](https://github.com/校对者ID)
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