mirror of
https://github.com/LCTT/TranslateProject.git
synced 2025-01-01 21:50:13 +08:00
44 lines
2.1 KiB
Markdown
44 lines
2.1 KiB
Markdown
Disable reboot using Ctrl-Alt-Del Keys in RHEL / CentOS
|
|
================================================================================
|
|
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
|
|
|
|
### For RHEL 5.X & CentOS 5.X ###
|
|
|
|
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 :
|
|
|
|
[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 ,
|
|
|
|
[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 ###
|
|
|
|
In RHEL 6.X / CentOS 6.X , reboot using the keys are handled by the file '**/etc/init/control-alt-delete.conf**'.
|
|
|
|
**Step:1** Before making the changes , first take the backup using below command
|
|
|
|
[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:
|
|
|
|
[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"
|
|
|
|
--------------------------------------------------------------------------------
|
|
|
|
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)
|
|
校对：[校对者ID](https://github.com/校对者ID)
|
|
|
|
本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创翻译，[Linux中国](http://linux.cn/) 荣誉推出
|
|
|
|
[a]:http://www.linuxtechi.com/author/pradeep/ |