Problem with Cross origin blocked in local system. How it solve?

Dear Friends,

I try to access a local web service in my company network to work on . But it shows error as

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at (Reason: CORS header ‘Access-Control-Allow-Origin’ missing)

I added a proxy in my test application on ionic.config.json as

  "name": "dreamhouse-ionic3",
  "app_id": "",
  "integrations": {
    "cordova": {}
  "proxies": [
      "path": "/web",
      "proxyUrl": ""
  "type": "ionic-angular"

Now i can take the URL : http://localhost:8100/web
and it gives json data .

But in my app shows the same error.

How it can rectify ? please advise