CREATE ISSUE in JIRA using REST API Error

[Sumit Mukherjee]

Tried creating an issue in JIRA with the help of REST API

When triggered the below CURL command :

curl -X POST -H "Authorization: Basic mybase64encoded_username:password"
-d '{ "fields": {"project": {"key": "AUTOPOC"},"summary": "Test Summary 1 2 3...","issuetype": {"name": "Task"}}}'
-H "Content-Type: application/json"https://<HOST_NAME:PORT>/rest/api/2/issue/

Getting the below error :

curl: (56) Received HTTP code 403 from proxy after CONNECT