甲骨文云新机特殊调教

开放权限

sudo -i

卸载重装防火墙

apt purge -y iptables-persistent

iptables -L

apt update -y && apt install -y iptables-persistent

编辑文件

nano /etc/iptables/rules.v4

编辑的内容

*filter 

:INPUT DROP [0:0] 

:FORWARD DROP [0:0] 

:OUTPUT ACCEPT [0:0] 

-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT 

-A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT 

-A INPUT -p tcp --dport 22 -j ACCEPT

-A INPUT -i lo -j ACCEPT

COMMIT

加载规则

iptables-restore < /etc/iptables/rules.v4

systemctl enable netfilter-persistent

查看链与规则

iptables -L