Newman Report generation

I have several site urls and i want to check the status code is 200 or not by requesting in postman request. So i have created some GET request for each one of the URL and run the collection. In postman it’s giving me 200 ok status. Then i have export the collection and tried to run the collection from newman CLI to generate report. It’s giving 403 forbidden. But those urls are production url and i can hit it from anywhere and it’s loading fine in any network.
Why it’s giving 403 from CLI? How i can solve this??
Please help.