chaostoolkit-examples/apphub-l7ilb-urlmap-fault-injection/app/terraform/firewall.tf

#
# Copyright 2023 Google LLC
#
#   Licensed under the Apache License, Version 2.0 (the "License");
#   you may not use this file except in compliance with the License.
#   You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS,
#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#   See the License for the specific language governing permissions and
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# allow all access from IAP and health check ranges
resource "google_compute_firewall" "fw_iap" {
  name          = "l7-ilb-fw-allow-iap-hc-apphub"
  direction     = "INGRESS"
  network       = google_compute_network.ilb_vpc.id
  source_ranges = ["130.211.0.0/22", "35.191.0.0/16", "35.235.240.0/20"]
  allow {
    protocol = "tcp"
  }
}

# allow http from proxy subnet to backends
resource "google_compute_firewall" "fw_ilb_to_backends" {
  name      = "l7-ilb-fw-allow-ilb-to-backends-apphub"
  direction = "INGRESS"
  network   = google_compute_network.ilb_vpc.id

  source_ranges = [google_compute_subnetwork.proxy_subnet.ip_cidr_range]
  target_tags   = ["http-server"]
  allow {
    protocol = "tcp"
    ports    = ["80", "443", "8080"]
  }
}