Error: connect EACCES 192.168.60.228:1337

I 'm getting error below 

Error: connect EACCES 192.168.60.222:1337"

 While trying to connect Azure App with --> On-premises (External) Backend System.

 

Details Logs:

url:  http://192.168.60.222:1337/api/helpdesk/asset/validateAsset?assetId=ram-lp&userId=R2527

-----> error:  { Error: connect EACCES 192.168.60.222:1337
    at Object.exports._errnoException (util.js:1026:11)
    at exports._exceptionWithHostPort (util.js:1049:20)
    at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1085:14)
  code: 'EACCES',
  errno: 'EACCES',
  syscall: 'connect',
  address: '192.168.60.222',
  port: 1337 }