How to allow access outside localhost

Question

How can I allow access outside the localhost at Angular2? I can navigate at localhost:3030/panel easily but I can not navigate when I write my IP such as

Answer 1

I just edit angular.json file in my project as below and it works

...

    "serve": {
      "builder": "@angular-devkit/build-angular:dev-server",
      "options": {
        "browserTarget": "project:build",
        "host": "0.0.0.0"
      },

...