CentOS6和 CentOS7两个版本的火墙操作操作工具不同，分别是iptables和firewalld ，如果想 CentOS7也可以使用iptables，需要安装iptables-services服务；
CentOS6关闭防火墙：
| 123 | [root@test01 ~]# service iptables status -- 查看防火墙状态[root@test01 ~]# service iptables stop -- 关闭防火墙[root@test01 ~]# chkconfig iptables off -- 关闭防火墙开机自启动 |
CentOS7关闭防火墙：
| 123456789101112 | [root@test01 ~]# systemctl status firewalld -- 查看防火墙状态● firewalld.service - firewalld - dynamic firewall daemon Loaded: loaded (/usr/lib/systemd/system/firewalld.service; disabled; vendor preset: enabled) Active: active (running) since Fri 2020-12-18 14:36:16 CST; 3s ago Docs: man:firewalld(1) Main PID: 7111 (firewalld) CGroup: /system.slice/firewalld.service └─7111 /usr/bin/python2 -Es /usr/sbin/firewalld --nofork --nopidDec 18 14:36:16 test01 systemd[1]: Starting firewalld - dynamic firewall daemon...Dec 18 14:36:16 test01 systemd[1]: Started firewalld - dynamic firewall daemon.[root@test01 ~]# systemctl stop firewalld -- 关闭防火墙[root@test01 ~]# systemctl disable firewalld -- 关闭防火墙开机自启动 |
CentOS7使用iptables操作防火墙：
| 123456789 | [root@test01 ~]# service iptables status -- 安装iptables-services之前Redirecting to /bin/systemctl status iptables.serviceUnit iptables.service could not be found.[root@test01 ~]# yum install iptables-services -- 安装iptables-services[root@test01 ~]# service iptables status -- 安装iptables-services之后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) |
