node - Alibaba ubuntu server, the external network cannot access through IP?

Question

Written a demo (the hello world part of the node official website), and it runs without problems on the server. Curl localhost can also return, but it cannot be accessed from the external network

const http = require('http')

http.createServer(function(req,res){
        res.writeHead(200,{'Content-Type':'text/plain'})
        res.end('hello world')
}).listen(8082)


console.log('server running on http://localhost:8082')

Supplement: The firewall is not turned on

Answer 1

Have the firewall and security group released the ports?

Answer 2

Do you need to open the corresponding port for iptables? I guessed