this post was submitted on 22 Jul 2023
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Question: Communication between AWS Commercial and Gov Cloud (beehaw.org)
submitted 1 year ago by s900mhz@beehaw.org to c/programming@beehaw.org
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Hey! Curious if anyone tried to communicate between GovCloud and Commercial AWS? I am aware they are separated by design. I have a task to try to have a ECS make an api call a private api gateway on GovCloud. Right now the idea is to use private API gateway on GovCloud and a VPC Endpoint on the Commercial side. I don’t think this will work..

I’m certain that this cannot be done without a VPN or having the GovCloud api be public facing, but as I’m not by any means an expert in AWS networking I am curious if anyone has any thoughts?

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[–] lowleveldata@programming.dev 1 points 1 year ago* (last edited 1 year ago) (1 children)

Obliviously it would depend on the API you need. For example if ECS has to send email via a SMTP server inside the private network (to reach domain mail box or sth). It should be possible to open a public facing (authentication required) API at ECS to return a list of emails it wants to send. A service inside the private network can then poll this API (E.g. once per 2 minutes) to retrieve any new emails to be sent. This should work if private -> outbound access -> AWS is allowed.

[–] s900mhz@beehaw.org 1 points 1 year ago

Yeah they are trying to avoid public facing apis, that’s the major issue here. I don’t think it’s possible. I can get a definitive answer from AWS support.