域名建站套CloudFlare安全盾防止源站IP泄露教程

检查是否安装了iptables

service iptables status

安装iptables

yum install -y iptables

升级iptables

yum update iptables

安装iptables-services

yum install -y iptables-services

查看默认防火墙状态

firewall-cmd --state

停止firewall

systemctl stop firewalld.service

禁止firewall开机启动

systemctl disable firewalld.service

禁用firewalld服务

systemctl mask firewalld

查看iptables现有规则

iptables -L -n

先允许所有

iptables -P INPUT ACCEPT

清空所有默认规则

iptables -F

清空所有自定义规则

iptables -X

所有计数器归0

iptables -Z

禁止来自IPv4的所有HTTP/S访问请求

iptables -I INPUT -p tcp --dport 80 -j DROP

iptables -I INPUT -p tcp --dport 443 -j DROP

对Cloudflare CDN IPv4地址开放HTTP/S入站访问

for i in `curl https://www.cloudflare.com/ips-v4`; do iptables -I INPUT -s $i -p tcp --dport 80 -j ACCEPT; done

for i in `curl https://www.cloudflare.com/ips-v4`; do iptables -I INPUT -s $i -p tcp --dport 443 -j ACCEPT; done

禁止来自IPv6的所有HTTP/S访问请求

ip6tables -I INPUT -p tcp --dport 80 -j DROP

ip6tables -I INPUT -p tcp --dport 443 -j DROP

对Cloudflare CDN IPv6地址开放HTTP/S入站访问

for i in `curl https://www.cloudflare.com/ips-v6`; do ip6tables -I INPUT -s $i -p tcp --dport 80 -j ACCEPT; done

for i in `curl https://www.cloudflare.com/ips-v6`; do ip6tables -I INPUT -s $i -p tcp --dport 443 -j ACCEPT; done

保存iptables配置

iptables-save

ip6tables-save

保存规则（路径：/etc/sysconfig/iptables和ip6tables）

service iptables save

service ip6tables save

开启iptables服务

systemctl enable iptables.service

systemctl enable ip6tables.service

自动载入规则

chkconfig iptables on

chkconfig ip6tables on

开启服务

systemctl start iptables.service

systemctl start ip6tables.service

查看状态

systemctl status iptables.service

systemctl status ip6tables.service

重启iptables

systemctl restart iptables.service

systemctl restart ip6tables.service

最终效果