hostnamectl --static set-hostname CentOS #改计算机名yum install gcc libgmb nettle nettle-devel wget iptables.servicesystemctl stop firewalld.service #停止自带防火墙systemctl disable firewalld.service #禁用systemctl restart iptables.service #启动iptablessystemctl enable iptables.service wget http://www.thekelleys.org.uk/dnsmasq/dnsmasq-2.72.tar.gzmake COPTS=-DHAVE_DNSSEC yum install epel-releaseyum install open***