Allow only exposing services over Tailscale

This works using public DNS, so doesn't need Tailscale's magic DNS to override my local.

ansible/roles/gateway/files/nginx.conf

@@ -21,6 +21,20 @@ map $ssl_preread_server_name $gateway_destination {
 server {
     listen 443;
     listen 8448;
+    listen [::]:443;
+    listen [::]:8448;
     proxy_pass $gateway_destination;
     proxy_protocol on;
 }
+
+server {
+    listen [{{ vps_hosts.private_ipv6_marker }}]:443;
+    listen [{{ vps_hosts.private_ipv6_marker }}]:8448;
+
+    access_log off;
+
+    deny all;
+
+    # This is never used, but need to keep nginx happy
+    proxy_pass 127.0.0.1:80;
+}

ansible/roles/ingress/files/nginx.conf

@@ -9,6 +9,8 @@ access_log /var/log/nginx/access.log access;
 server {
     listen 443;
     listen 8448;
+    listen [::]:443;
+    listen [::]:8448;
     proxy_pass {{ pve_hosts.docker.ip }}:443;
     proxy_protocol on;
     proxy_socket_keepalive on;

ansible/roles/pve_docker/files/whoami/docker-compose.yml

@@ -7,6 +7,9 @@ services:
     labels:
       - traefik.enable=true
       - traefik.http.routers.whoami.rule=Host(`whoami.theorangeone.net`) || Host(`whoami-cdn.theorangeone.net`)
+
+      - traefik.http.routers.whoami-private.rule=Host(`whoami-private.theorangeone.net`)
+      - traefik.http.routers.whoami-private.middlewares=tailscale-only@file
     networks:
       - default
       - traefik

ansible/roles/traefik/files/file-provider-main.yml

@@ -8,3 +8,9 @@ http:
       headers:
         customResponseHeaders:
           Permissions-Policy: interest-cohort=()
+
+    tailscale-only:
+      ipAllowList:
+        sourceRange:
+          - "{{ tailscale_cidr }}"
+          - "{{ tailscale_cidr_ipv6 }}"