Linux啟動(dòng)引導(dǎo)加密是提高Linux安全性的一種措施，這里以RedHat Linux為例來進(jìn)行Linux啟動(dòng)引導(dǎo)加密的設(shè)置，實(shí)驗(yàn)是提高我們技術(shù)的一種手段，我們一定要親手試一試這種方法，完成技術(shù)的學(xué)習(xí)。

讓linux啟動(dòng)引導(dǎo)加密方法
#vi /boot/grub/grub.conf
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#  all kernel and initrd paths are relative to /boot/, eg.
#  root (hd0,0)
#  kernel /vmlinuz-version ro root=/dev/sda2
#  initrd /initrd-version.img
#boot=/dev/sda
default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
title Red Hat Linux (2.4.18-3)
password 12345678
root (hd0,0)
kernel /vmlinuz-2.4.18-3 ro root=/dev/sda2
initrd /initrd-2.4.18-3.img
~
~
"/boot/grub/grub.conf" 17L, 569C written
[root@localhost root]# reboot

現(xiàn)以上提示輸入：12345678
 
系統(tǒng)才可以引導(dǎo)
 
注意：遠(yuǎn)程勿試！
 
以密文方式
 
[root@localhost root]# grub-md5-crypt
Password:
$1$jQORq$BbVuVrnQ60b87FlXP/aau/
[root@localhost root]# vi /boot/grub/grub.conf
 
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You have a /boot partition.  This means that
#  all kernel and initrd paths are relative to /boot/, eg.
#  root (hd0,0)
#  kernel /vmlinuz-version ro root=/dev/sda2
#  initrd /initrd-version.img
#boot=/dev/sda
default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
title Red Hat Linux (2.4.18-3)
password --md5 $1$jQORq$BbVuVrnQ60b87FlXP/aau/
root (hd0,0)
kernel /vmlinuz-2.4.18-3 ro root=/dev/sda2
initrd /initrd-2.4.18-3.img
~
~
"/boot/grub/grub.conf" 17L, 598C written
[root@localhost root]# reboot

這里就進(jìn)行了Linux啟動(dòng)引導(dǎo)加密的設(shè)置。

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