参考：
https://blog.csdn.net/orange596/article/details/78668808停止和关闭firewalld
systemctl stop firewalld.service
systemctl disable firewalld.service安装iptables:
yum install iptables-services配置iptables:
vim /etc/sysconfig/iptables:
# sample configuration for iptables service
# you can edit this manually or use system-config-firewall
# please do not ask us to add additional ports/services to this default configuration
*filter
:INPUT DROP [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
-A INPUT -p tcp --dport 80 -m string --algo bm --string "php" -j DROP
-A INPUT -p tcp --dport 80 -m string --algo bm --string "java" -j DROP
-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 22022 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 22500 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 443 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 5443 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
COMMIT重启iptables:
systemctl restart iptables.service
systemctl enable iptables.service禁用selinux：
vim /etc/selinux/config:
SELINUX=disabled
#立刻生效配置
setenforce 0