javascript - Start a node service on the cloud server, but it cannot be accessed through the public IP on the local machine

Question

Mengxin recently wanted to learn some knowledge about node servers, so he started a node service on the cloud server (as shown below), but on his local machine through the public IP (http://106.14.188.xxx:3000/) But cannot access

Answer 1

Alibaba Cloud? Check if there are any firewall rules similar to those provided by Alibaba Cloud in the service provider's panel. Taking Alibaba Cloud as an example, it does not allow inbound requests beyond port 22 by default

Answer 2

Check the firewall, 3000 is allowed but the port is not

sudo iptables -L

Answer 3

Log in to the Alibaba Cloud management platform and set the port whitelist and permissions