chattr +i /etc/rc.d/rc.local
chattr +i /etc/profile
chattr +i /etc/passwd
chattr +i /etc/shadow
chattr +i /etc/group
chattr +i /etc/groupshadow
chattr +i /etc/sysconfig/iptables
chattr +i /etc/fstab
chattr +i /etc/ssh/sshd_config
chattr +i /etc/crontab
chattr +i /var/spool/cron/root
chattr +i /root/.ssh/authorized_keys
chattr +i /root/.ssh/id_dsa
chattr +i /root/.ssh/id_dsa.pub
chattr +i /etc/ssh/sshd_config
#部分重要文件可以添加进来
chattr -i /etc/rc.d/rc.local
chattr -i /etc/profile
chattr -i /etc/passwd
chattr -i /etc/shadow
chattr -i /etc/group
chattr -i /etc/groupshadow
chattr -i /etc/sysconfig/iptables
chattr -i /etc/fstab
chattr -i /etc/ssh/sshd_config
chattr -i /etc/crontab
chattr -i /var/spool/cron/root
chattr -i /root/.ssh/authorized_keys
chattr -i /root/.ssh/id_dsa
chattr -i /root/.ssh/id_dsa.pub
chattr -i /etc/ssh/sshd_config