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systemctl stop firewalldsystemctl mask firewalldyum install iptables-services -ysystemctl enable iptablesecho net.ipv4.ip_forward = 1 | tee -a /etc/sysctl.confsysctl -piptables -A FORWARD -d 10.20.0.1 -i eth0 -p tcp -m tcp –dport 443 -j AC

1.修改iptables配置,添加80端口 [root@localhost ~]# iptables -I INPUT -p tcp –dport 80 -j ACCEPT 2.保存配置 [root@localhost ~]# service iptables save 3.重启防火墙 [root@localhost ~]# service iptables restart

CentOS下iptables防火墙的基本操作命令: 查询防火墙状态: [root@localhost ~]# service iptables status 停止防火墙 [root@localhost ~]# service iptables stop 启动防火墙 [root@localhost ~]# service iptables start 重启防