一、防火墙配置
不知道为什么,云主机没有开启firewall 或iptables,记录一下配置iptables防火墙的步骤
1、检测并关闭firewall
systemctl status firewalld.service #检测是否开启了firewallsystemctl stop firewalld.service #关闭firewallsytsemctl disable firewalld.service #禁止firewall开机自启
2、检测并安装iptables
yum install iptables-services
将规则写入iptables配置文件
vi /etc/sysconfig/iptables
iptables文件内容:
*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 -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
-A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT
systemctl restart iptables.service systemctl enable iptables.service
二、关闭SELINUX
至于为什么关闭selinux,请看知乎网友的回答 GO
vi /etc/selinux/config#SELINUX=enforcing #注释掉#SELINUXTYPE=targeted #注释掉SELINUX=disabled #增加:wq! #保存退出 setenforce 0 #使配置立即生效