1、关闭firewall:
停止firewall
systemctl stop firewalld.service
禁止firewall开机启动
systemctl disable firewalld.service
查看默认防火墙状态(关闭后显示notrunning,开启后显示running)
firewall-cmd --state
2、iptables防火墙(这里iptables已经安装,下面进行配置)
编辑防火墙配置文件
vi/etc/sysconfig/iptables
# sampleconfiguration for iptables service
# you can edit thismanually or use system-config-firewall
# please do not askus to add additional ports/services to this default configuration
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT[0:0]
:OUTPUT ACCEPT[0:0]
-A INPUT -m state--state RELATED,ESTABLISHED -j ACCEPT
-A INPUT -p icmp -jACCEPT
-A INPUT -i lo -jACCEPT
-A INPUT -p tcp -mstate --state NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -jACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 8080-j ACCEPT
-A INPUT -j REJECT--reject-with icmp-host-prohibited
-A FORWARD -jREJECT --reject-with icmp-host-prohibited
COMMIT
:wq!
#保存退出
备注:这里使用80和8080端口为例。*部分一般添加到“-A INPUT -p tcp -m state –state NEW -m tcp–dport 22 -j ACCEPT”行的上面或者下面,切记不要添加到最后一行,否则防火墙重启后不生效。
重启防火墙使配置生效
systemctlrestart iptables.service
设置防火墙开机启动
systemctlenable iptables.service
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