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sudo yum update

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sudo yum install firewalld
sudo systemctl start firewalld
sudo systemctl enable firewalld

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sudo systemctl list-unit-files --type=service | grep enabled
sudo systemctl stop [service_name]
sudo systemctl disable [service_name]

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һЩÍøÂçЧÀÍ¿ÉÄܱ£´æÇå¾²Îó²î£¬ÎªÁ˱£»¤ÏµÍ³Çå¾²£¬½¨Òé½ûÓÃÕâЩЧÀÍ¡£ÒÔÏÂÊǽûÓÃFTPЧÀ͵ÄʾÀý´úÂ룺

sudo systemctl stop vsftpd
sudo systemctl disable vsftpd

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SELinuxÊÇCentOSϵͳĬÈϵÄÇ徲ģ¿é£¬¿ÉÒÔÏÞÖƶñÒâ´úÂëµÄÖ´ÐС£ÒÔÏÂÊÇ×°ÖúÍÉèÖÃSELinuxµÄʾÀý´úÂ룺

sudo yum install selinux-policy-targeted
sudo setenforce 1
sudo sed -i 's/SELINUX=disabled/SELINUX=enforcing/g' /etc/selinux/config

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sudo yum install epel-release

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sudo yum install clamav rkhunter
sudo freshclam
sudo rkhunter --update

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sudo yum install rsync
sudo crontab -e

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2 * rsync -avz –delete /path/to/source /path/to/backup

sudo yum install htop

htop

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