DNS服務器的相關配置以及功能

1 高速緩存dns （1）dns的安裝部署 yum install bind -y systemctl start named systemctl enable named systemctl stop firewall (2)修改配置文件 主配置文件：/etc/named.conf vim /etc/named.conf 11 listen-on port 53 { any; }; 17 all

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