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fix: add note about updating transitivity firewall rules in the Hub and Spoke network mode #906

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daniel-cit
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add note about updating transitivity firewall rules in the Hub and Spoke network mode

@daniel-cit daniel-cit requested review from a team and rjerrems as code owners December 7, 2022 03:08
3-networks-hub-and-spoke/README.md Outdated Show resolved Hide resolved
3-networks-hub-and-spoke/README.md Outdated Show resolved Hide resolved
To enabled **Hub and Spoke** transitivity set the variable `enable_hub_and_spoke_transitivity` to `true`.

**Note:** The default `allow-transitivity-ingress` firewall rule will rise SCC findings because of the ingress allow all ports and protocols from the [Shared address space CIDR block](https://en.wikipedia.org/wiki/IPv4_shared_address_space) used in the rule.
Because of this, you should update the implemented network access controls between spokes with valid values for your environment through the [firewall functionality](./modules/transitivity/main.tf#L142) of the corresponding NVAs to make them more restrictive.
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Do you expect the user to perform this action? is it optional?

daniel-cit and others added 2 commits December 7, 2022 13:01
Co-authored-by: Max Portocarrero CI&T <105444618+maxi-cit@users.noreply.github.com>
@daniel-cit daniel-cit changed the title add note about updating transitivity firewall rules in the Hub and Spoke network mode fix: add note about updating transitivity firewall rules in the Hub and Spoke network mode Dec 7, 2022
Co-authored-by: Bharath KKB <bharathkrishnakb@gmail.com>
@bharathkkb bharathkkb merged commit 4211162 into terraform-google-modules:master Dec 10, 2022
BrianReevz pushed a commit to BrianReevz/terraform-example-foundation that referenced this pull request Jun 16, 2023
…nd Spoke network mode (terraform-google-modules#906)

* add note about updating transitivity firewall rules in the Hub and Spoke network mode

* Apply suggestions from code review

Co-authored-by: Max Portocarrero CI&T <105444618+maxi-cit@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: Bharath KKB <bharathkrishnakb@gmail.com>

Co-authored-by: Max Portocarrero CI&T <105444618+maxi-cit@users.noreply.github.com>
Co-authored-by: Andrew Peabody <andrewpeabody@google.com>
Co-authored-by: Bharath KKB <bharathkrishnakb@gmail.com>
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4 participants