对外开放端口

Ubuntu

iptables -P INPUT ACCEPT
iptables -P FORWARD ACCEPT
iptables -P OUTPUT ACCEPT
iptables -F
netfilter-persistent save

Centos

# 删除多余附件
systemctl stop oracle-cloud-agent
systemctl disable oracle-cloud-agent
systemctl stop oracle-cloud-agent-updater
systemctl disable oracle-cloud-agent-updater

# 停止firewall
systemctl stop firewalld.service
# 禁止firewall开机启动
systemctl disable firewalld.service