Hello,

just to be sure, do you mean you want to ensure that traffic that is 
non-http (thus, it is https) is not allowed, and that traffic that is https 
is not allowed? So you mean you only want to allow http, and not allow 
https? Anyway, there is no default mechanism to do that using App Engine's 
infrastructure, it has to be done on the code level. Related to this, there 
is the documentation about forcing https [1].

App Engine has its own firewall, so, no, VPC firewall rules don't apply to 
it. You can configure its firewall, the documentation is this [2].

Best regards
____
[1]:
https://cloud.google.com/appengine/docs/flexible/go/how-requests-are-handled#forcing_https_connections
[2]:
https://cloud.google.com/appengine/docs/flexible/go/creating-firewalls

El divendres, 3 abril de 2020 20:39:49 UTC+2, Vishwanath T R va escriure:
>
> We want to ensure no non-http/https incoming traffic is allowed to 
> appengine. Is that something that appengine guarantees by default (for flex 
> environment)? Also do the VPC firewall rules for egress apply to app engine 
> also?
>
> Thanks
> Vish
>

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