modules/dwh-networking/firewall.tf

/**
 * Copyright 2021 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
 * limitations under the License.
 */


resource "google_compute_firewall" "deny_all_egress" {
  name      = "fw-e-shared-restricted-65535-e-d-all-all-all"
  network   = module.network.network_name
  project   = var.project_id
  direction = "EGRESS"
  priority  = 65535

  log_config {
    metadata = "INCLUDE_ALL_METADATA"
  }

  deny {
    protocol = "all"
  }

  destination_ranges = ["0.0.0.0/0"]
}

resource "google_compute_firewall" "allow_restricted_api_egress" {
  name      = "fw-e-shared-restricted-65534-e-a-allow-google-apis-all-tcp-443"
  network   = module.network.network_name
  project   = var.project_id
  direction = "EGRESS"
  priority  = 65534

  log_config {
    metadata = "INCLUDE_ALL_METADATA"
  }

  allow {
    protocol = "tcp"
    ports    = ["443"]
  }

  destination_ranges = [local.restricted_googleapis_cidr]
}

resource "google_compute_firewall" "allow_private_api_egress" {
  name      = "fw-e-shared-private-65533-e-a-allow-google-apis-all-tcp-443"
  network   = module.network.network_name
  project   = var.project_id
  direction = "EGRESS"
  priority  = 65533

  log_config {
    metadata = "INCLUDE_ALL_METADATA"
  }

  allow {
    protocol = "tcp"
    ports    = ["443"]
  }

  destination_ranges = [local.private_googleapis_cidr]
}