Is there an equivalent of AWS "security groups" between App Engine and Compute Engine instances?

[Sudhanshu Gaur via StackOverflow]

As of now In 2016 as google cloud has launched google cloud flexible environment appengine/docs/flexible/. So yes it is possible now because now both app engine and compute engine are present in same network and therefore using app engine you can access compute engine by using their internal Ip, also remember to delete all external firewall rules for your compute engines if you only want to allow access from app engine.

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