Grub Password and user permissions for CentOS System Security

Grub Password and user permissions for CentOS System Security

1. Add the grub Password in linux

. Use the grub-md5-crypt command to generate the encrypted MD5 code

Grub-md5-crypt>/boot/grub. conf

Enter the password twice in the blank space and press Enter.

Vim/boot/grub. conf

Copy the generated password to the timeout downstream.

Add password -- md5 _ before the password _

Save and exit.

Ii. Set the automatic logout time for linux Users

Add a line to/etc/profile:

Export TMOUT = 60 // This is in seconds. That is, if the user does not perform any operation within 60 seconds, it is automatically logged out.

Source/etc/profile // make the previous step take effect

After this setting, users in the system will log out automatically within one minute after logging on to linux.