diff --git a/.github/workflows/iac-pipeline-destroy.yml b/.github/workflows/iac-pipeline-destroy.yml
index d5bb5594..fd69fb83 100644
--- a/.github/workflows/iac-pipeline-destroy.yml
+++ b/.github/workflows/iac-pipeline-destroy.yml
@@ -84,6 +84,12 @@ jobs:
       run: |
         bash run_terraform.sh
       working-directory: iac_modules/terraform/${{ env.CLOUD }}/network/
+
+    - name: Delete Google Cloud Network Resources
+      run: |
+        gcloud compute routers delete nat-router --region=asia-northeast1 --project=cloudsvcworkspace --quiet || true
+        gcloud compute routers delete public-router --region=asia-northeast1 --project=cloudsvcworkspace --quiet || true
+        gcloud compute addresses delete nat-manual-ip-0 --region=asia-northeast1 --project=cloudsvcworkspace --quiet || true
   vhost:
     runs-on: ubuntu-latest
 
diff --git a/iac_modules/terraform/gcp/firewall/config.yaml b/iac_modules/terraform/gcp/firewall/config.yaml
index a7b0a8f7..7ef1244c 100644
--- a/iac_modules/terraform/gcp/firewall/config.yaml
+++ b/iac_modules/terraform/gcp/firewall/config.yaml
@@ -1,5 +1,5 @@
-region: "cloudsvcworkspace"
-project_id: "cloudsvcsandbox"
+project_id: "cloudsvcworkspace"
+region: "asia-northeast1"
 bucket_name: "iac_status_terraform_gcp"
 firewall_rules:
   - name: allow-ingress