防火墙

systemctl start firewalld.service            #启动防火墙 
systemctl stop firewalld.service             #停止防火墙 
systemctl status firewalld                   #查看防火墙状态
systemctl enable firewalld                   #设置防火墙随系统启动
systemctl disable firewalld                  #禁止防火墙随系统启动
firewall-cmd --state                         #查看防火墙状态 
firewall-cmd --reload                        #更新防火墙规则 
firewall-cmd --list-ports                    #查看所有打开的端口 
firewall-cmd --list-services                 #查看所有允许的服务 
firewall-cmd --get-services                  #获取所有支持的服务 

端口

firewall-cmd --query-port=8080/tcp                       # 查询端口是否开放
firewall-cmd --add-port=8080/tcp --permanent             #永久添加8080端口例外(全局)
firewall-cmd --remove-port=8800/tcp --permanent          #永久删除8080端口例外(全局)
firewall-cmd --add-port=65001-65010/tcp --permanent      #永久增加65001-65010例外(全局) 
firewall-cmd  --zone=public --add-port=8080/tcp --permanent            #永久添加8080端口例外(区域public)
firewall-cmd  --zone=public --remove-port=8080/tcp --permanent         #永久删除8080端口例外(区域public)
firewall-cmd  --zone=public --add-port=65001-65010/tcp --permanent     #永久增加65001-65010例外(区域public

指定IP/端口

firewall-cmd --zone=public --list-rich-rules  # 查询针对指定IP开放/拒绝端口访问列表
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="221.239.119.18" port protocol="tcp" port="27017" accept"
firewall-cmd --permanent --remove-rich-rule="rule family="ipv4" source address="103.172.41.204" port protocol="tcp" port="27017" accept"
firewall-cmd --permanent --remove-rich-rule='rule family="ipv4" source address="221.239.119.18" port port="27017" protocol="tcp" reject'
firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="172.16.1.2" port protocol="tcp" port="27017" reject"