centos 7 下 firewalld关闭 、selinux关闭、iptables规则

# 关闭 firewalld ps -ef | grep firewalld    「 默认开启」  root      3844     1  0 Jun30 ?        00:00:02 /usr/bin/python -Es /usr/sbin/firewalld --nofork --nopid systemctl stop firewalld    「 stop & start & restart & status 」  systemctl disable firewalld.service    「 禁止开机启动 & enable」    # 关闭 selinux vim /etc/selinux/config SELINUX=disabled #SELINUXTYPE=targeted # iptables 未安装 service iptables status    「 service name 状态」  Redirecting to /bin/systemctl status iptables.service * iptables.service - IPv4 firewall with iptables    Loaded: loaded (/usr/lib/systemd/system/iptables.service; disabled; vendor preset: disabled)    Active: inactive (dead)   # iptables 安装 yum -y install iptables-services systemctl start iptables.service    「 systemctl start iptables 」    systemctl stop iptables.service        「 systemctl stop iptables 」   systemctl status iptables.service    「 systemctl status iptables 」  访问 http://10.211.55.12    「 OK 」 systemctl start iptables     访问 http://10.211.55.12    「 error 」   # iptables 备份 cd /etc/sysconfig/ cp iptables iptables.bak   # 开放80端口 iptables -I INPUT -p tcp --dport 80 -m state --state NEW -j ACCEPT iptables -L -n    「 查看生效」  访问 http://10.211.55.12    「 OK 」 iptables-save > /etc/sysconfig/iptables    「 保存添加的规则 」