一键关闭SELinux和firewalld

 #!/bin/bash

 #

 echo "此段代码是判断和永久关闭SELinux"

 sleep 2

 sefile=/etc/selinux/config

 if [ "`getenforce`" == "Enforcing" ]; then

   echo "selinux is starting,the scripts will set up"

   setenforce 0

 else

   if [ "`getenforce`" == "Permissive" ]; then

     echo "selinux was down"

   fi

 fi

 if [ `grep 'SELINUX=enforcing' $sefile | wc -l` -eq 1 ]; then

   echo "selinux is start up with system boot,the scripts will set up."

   sed -i 's/SELINUX=enforcing/SELINUX=disabled/' $sefile

 else

   if [ `grep 'SELINUX=disabled' $sefile | wc -l` -eq 1 ]; then

     echo "selinux will not start up with your system boot."

   fi

 fi

 sleep 2

 echo

 echo "此段代码是判断和永久关闭firewalld"

 sleep 2

 systemctl status firewalld &>/tmp/1.txt

 fifile=/tmp/1.txt

 if [ `head -n 3 $fifile | grep 'running' | wc -l` -eq 1 ]; then

   echo "firewalld is running,the script will set up."

   systemctl stop firewalld

   systemctl disable firewalld &>/dev/null

 else

   echo "firewalld is stopped"

 fi

启动一个服务：systemctl start firewalld.service
关闭一个服务：systemctl stop firewalld.service
重启一个服务：systemctl restart firewalld.service
显示一个服务的状态：systemctl status firewalld.service
在开机时启用一个服务：systemctl enable firewalld.service
在开机时禁用一个服务：systemctl disable firewalld.service
查看服务是否开机启动：systemctl is-enabled firewalld.service
查看已启动的服务列表：systemctl list-unit-files|grep enabled
查看启动失败的服务列表：systemctl --failed

3.配置firewalld-cmd

查看版本： firewall-cmd --version
查看帮助： firewall-cmd --help
显示状态： firewall-cmd --state
查看所有打开的端口： firewall-cmd --zone=public --list-ports
更新防火墙规则： firewall-cmd --reload
查看区域信息: firewall-cmd --get-active-zones
查看指定接口所属区域： firewall-cmd --get-zone-of-interface=eth0
拒绝所有包：firewall-cmd --panic-on
取消拒绝状态： firewall-cmd --panic-off
查看是否拒绝： firewall-cmd --query-panic

那怎么开启一个端口呢？

添加
firewall-cmd --zone=public --add-port=80/tcp --permanent （--permanent永久生效，没有此参数重启后失效）

重新载入
firewall-cmd --reload

查看
firewall-cmd --zone= public --query-port=80/tcp

删除
firewall-cmd --zone= public --remove-port=80/tcp --permanent