1- create the vSRX VM ( with 3 interfaces) trusted, untrusted and Mgt
2- Service >> create service instance >> a- template >> b- instance:
3- Create Networking policy: attach: untrusted to trusted
4- Under networking networks>> aa policies in the subnetwork
{"serverDuration": 145, "requestCorrelationId": "b670d5536fe247a58a5daae0dd50da49"}