linux常用指令--防火墙

centos7

　　iptables : 

　　　　　　如果你想使用iptables静态路由规则,那么就禁用centos7默认的firewalld，并安装ipteables-services, 启用iptables和ip6tables;

yum install iptables-services
systemctl mask firewalld.service
systemctl enable iptables.service  //添加开启动项
systemctl enable ip6tables.service

　　　　　　静态防火墙规则配置文件路径为 /etc/sysconfig/iptables 和 /etc/sysconfig/ip6tables中，可自己在其中配置规则;

　　　　　　配置完规则以后,需要先停用firewalld，然后启用iptables和ip6tables服务即可:

systemctl stop firewalld.service
systemctl start iptables.service
systemctl start ip6tables.service

　　　firewalld :

　　　　　* 查看firewalld状态 =>  firewall-cmd --state

[root@iZ28uvczcf6Z ~]# firewall-cmd --state
running

　　　　　*开启80端口 =>　　firewall-cmd --zone=public --add-port=80/tcp --permanent

[root@iZ28uvczcf6Z ~]# firewall-cmd --zone=public --add-port=8888/tcp --permanent
success
[root@iZ28uvczcf6Z ~]# 

　　　　　　　　出现success说明成功了；

　　　　　　　　命令含义： --zone  #作用域

　　　　　　　　　　　　　--add-port=80/tcp #添加端口，格式为 ： 端口/通讯协议

　　　　　　　　　　　　　--permanent  #永久生效,没有此参数时,重启即失效

　　　　　　* 重启防火墙 =>　　systemctl restart firewalld.service

　　　　　　* 启动 =>　　systemctl start firewalld

　　　　　　　禁用 =>　　systemctl disable firewalld

　　　　　　　停止 =>　　systemctl stop firewalld

　　　　　　* 查看所有启用的区域的特性 =>　　firewall-cmd --list-all-zones

[root@iZ28uvczcf6Z ~]# firewall-cmd --list-all-zones
work
  target: default
  icmp-block-inversion: no
  interfaces:
  sources:
  services: dhcpv6-client ssh
  ports:
  protocols:
  masquerade: no
  forward-ports:
  sourceports:
  icmp-blocks:
  rich rules: 
 
drop
  target: DROP
  icmp-block-inversion: no
  interfaces:
  sources:
  services:
  ports:
  protocols:
  masquerade: no
  forward-ports:
  sourceports:
  icmp-blocks:
  rich rules: 
 
internal
  target: default
  icmp-block-inversion: no
  interfaces:
  sources:
  services: dhcpv6-client mdns samba-client ssh
  ports:
  protocols:
  masquerade: no
  forward-ports:
  sourceports:
  icmp-blocks:
  rich rules: 
 
external
  target: default
  icmp-block-inversion: no
  interfaces:
  sources:
  services: ssh
  ports:
  protocols:
  masquerade: yes
  forward-ports:
  sourceports:
  icmp-blocks:
  rich rules: 
 
trusted
  target: ACCEPT
  icmp-block-inversion: no
  interfaces:
  sources:
  services:
  ports:
  protocols:
  masquerade: no
  forward-ports:
  sourceports:
  icmp-blocks:
  rich rules: 
 
home
  target: default
  icmp-block-inversion: no
  interfaces:
  sources:
  services: dhcpv6-client mdns samba-client ssh
  ports:
  protocols:
  masquerade: no
  forward-ports:
  sourceports:
  icmp-blocks:
  rich rules: 
 
dmz
  target: default
  icmp-block-inversion: no
  interfaces:
  sources:
  services: ssh
  ports:
  protocols:
  masquerade: no
  forward-ports:
  sourceports:
  icmp-blocks:
  rich rules: 
 
public
  target: default
  icmp-block-inversion: no
  interfaces:
  sources:
  services: dhcpv6-client postgresql ssh
  ports: 3333/tcp 80/tcp 6379/tcp
  protocols:
  masquerade: no
  forward-ports:
  sourceports:
  icmp-blocks:
  rich rules: 
 
block
  target: %%REJECT%%
  icmp-block-inversion: no
  interfaces:
  sources:
  services:
  ports:
  protocols:
  masquerade: no
  forward-ports:
  sourceports:
  icmp-blocks:
  rich rules: 

后记

　　仅做备忘用...未完待续...

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