Can I call REST API jobs via a closed network?

Question

Is it possible to call REST API jobs via closed network?

Answer

HULFT Square does not support closed networks such as VPN or PrivateLink as a connection route for REST API jobs.

However, it is possible to call a REST API job from an AWS service to communicate without going through the Internet.

Usual REST API communication goes over the Internet, but for communication between AWS hosted instances and services using public IP addresses, all communication uses the AWS network, as described in the following official AWS FAQ.

Amazon VPC FAQs

Q. Does traffic go over the internet when two instances communicate using public IP addresses, or when instances communicate with a public AWS service endpoint?

No. When using public IP addresses, all communication between instances and services hosted in AWS use AWS's private network. Packets that originate from the AWS network with a destination on the AWS network stay on the AWS global network, except traffic to or from AWS China Regions.

Since the various HULFT Square services, including REST API jobs, are running on AWS, if the call destination is also an AWS service, all communication will take place within the AWS network without going over the Internet.