Nextcloud AIO behind Nginx Proxy Manager, questions for Security measures, real IP

Hi jtr,
Thank your for your help. Ok, here all the informations…
The whole line from dial-up router (provider) to Nextcloud:

  1. Router from Provider (does the internet connection forwarding to OpenWRT
  2. OpenWRT Router, forwarding 80/443 to VM1 with Nginx Proxy Manager
  3. VM 1 with Nginx Proxy Manager (Docker)
  4. VM 2 with Nextcloud AIO Docker

Nginx Proxy Manager config:

  1. Proxy Host “mynextclouddomain.org”
    Details:
Scheme = http
Forward Hostname / IP = "IP from VM2"
Forward Port = 11000
Block Commons Exploits = active
Websocket Support = active

SSL:

SSL-Certificate = from Lets Encrypt
Force SSL = acitve
HTTP/2 Support = active

Advanced:
Custom NGINX Configuration

client_body_buffer_size 512k;
proxy_read_timeout 86400s;
client_max_body_size 0;
proxy_set_header X-Real-IP  $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $host;

Docker-Compose File:

services:
  nextcloud-aio-mastercontainer:
    image: nextcloud/all-in-one:latest
    init: true
    restart: always
    container_name: nextcloud-aio-mastercontainer # This line is not allowed to be changed as otherwise AIO will not work correctly
    volumes:
      - nextcloud_aio_mastercontainer:/mnt/docker-aio-config # This line is not allowed to be changed as otherwise the built-in backup solution will not work
      - /var/run/user/1002/docker.sock:/var/run/docker.sock:ro # May be changed on macOS, Windows or docker rootless. See the applicable documentation. If adjusting, don't forget to also set 'WATCHTOWER_DOCKER_SOCKET_PATH'!
      #- $XDG_RUNTIME_DIR/docker.sock:/var/run/docker.sock:ro # Variable ĂĽber Portainer nicht verfĂĽgbar
    ports:
      #- 80:80 # Can be removed when running behind a web server or reverse proxy (like Apache, Nginx, Cloudflare Tunnel and else). See https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md
      - 8080:8080
      #- 8443:8443 # Can be removed when running behind a web server or reverse proxy (like Apache, Nginx, Cloudflare Tunnel and else). See https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md
    environment: # Is needed when using any of the options below
      # - AIO_DISABLE_BACKUP_SECTION=false # Setting this to true allows to hide the backup section in the AIO interface. See https://github.com/nextcloud/all-in-one#how-to-disable-the-backup-section
      - APACHE_PORT=11000 # Is needed when running behind a web server or reverse proxy (like Apache, Nginx, Cloudflare Tunnel and else). See https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md
      - APACHE_IP_BINDING=0.0.0.0 # Should be set when running behind a web server or reverse proxy (like Apache, Nginx, Cloudflare Tunnel and else) that is running on the same host. See https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md
      # - BORG_RETENTION_POLICY=--keep-within=7d --keep-weekly=4 --keep-monthly=6 # Allows to adjust borgs retention policy. See https://github.com/nextcloud/all-in-one#how-to-adjust-borgs-retention-policy
      # - COLLABORA_SECCOMP_DISABLED=false # Setting this to true allows to disable Collabora's Seccomp feature. See https://github.com/nextcloud/all-in-one#how-to-disable-collaboras-seccomp-feature
      # - NEXTCLOUD_DATADIR=/mnt/ncdata # Allows to set the host directory for Nextcloud's datadir. ⚠️⚠️⚠️ Warning: do not set or adjust this value after the initial Nextcloud installation is done! See https://github.com/nextcloud/all-in-one#how-to-change-the-default-location-of-nextclouds-datadir
      # - NEXTCLOUD_MOUNT=/mnt/ # Allows the Nextcloud container to access the chosen directory on the host. See https://github.com/nextcloud/all-in-one#how-to-allow-the-nextcloud-container-to-access-directories-on-the-host
      # - NEXTCLOUD_UPLOAD_LIMIT=10G # Can be adjusted if you need more. See https://github.com/nextcloud/all-in-one#how-to-adjust-the-upload-limit-for-nextcloud
      # - NEXTCLOUD_MAX_TIME=3600 # Can be adjusted if you need more. See https://github.com/nextcloud/all-in-one#how-to-adjust-the-max-execution-time-for-nextcloud
      # - NEXTCLOUD_MEMORY_LIMIT=512M # Can be adjusted if you need more. See https://github.com/nextcloud/all-in-one#how-to-adjust-the-php-memory-limit-for-nextcloud
      # - NEXTCLOUD_TRUSTED_CACERTS_DIR=/path/to/my/cacerts # CA certificates in this directory will be trusted by the OS of the nexcloud container (Useful e.g. for LDAPS) See See https://github.com/nextcloud/all-in-one#how-to-trust-user-defined-certification-authorities-ca
      # - NEXTCLOUD_STARTUP_APPS=deck twofactor_totp tasks calendar contacts notes # Allows to modify the Nextcloud apps that are installed on starting AIO the first time. See https://github.com/nextcloud/all-in-one#how-to-change-the-nextcloud-apps-that-are-installed-on-the-first-startup
      # - NEXTCLOUD_ADDITIONAL_APKS=imagemagick # This allows to add additional packages to the Nextcloud container permanently. Default is imagemagick but can be overwritten by modifying this value. See https://github.com/nextcloud/all-in-one#how-to-add-os-packages-permanently-to-the-nextcloud-container
      # - NEXTCLOUD_ADDITIONAL_PHP_EXTENSIONS=imagick # This allows to add additional php extensions to the Nextcloud container permanently. Default is imagick but can be overwritten by modifying this value. See https://github.com/nextcloud/all-in-one#how-to-add-php-extensions-permanently-to-the-nextcloud-container
      # - NEXTCLOUD_ENABLE_DRI_DEVICE=true # This allows to enable the /dev/dri device in the Nextcloud container. ⚠️⚠️⚠️ Warning: this only works if the '/dev/dri' device is present on the host! If it should not exist on your host, don't set this to true as otherwise the Nextcloud container will fail to start! See https://github.com/nextcloud/all-in-one#how-to-enable-hardware-transcoding-for-nextcloud
      # - NEXTCLOUD_KEEP_DISABLED_APPS=false # Setting this to true will keep Nextcloud apps that are disabled in the AIO interface and not uninstall them if they should be installed. See https://github.com/nextcloud/all-in-one#how-to-keep-disabled-apps
      # - TALK_PORT=3478 # This allows to adjust the port that the talk container is using. See https://github.com/nextcloud/all-in-one#how-to-adjust-the-talk-port
      - WATCHTOWER_DOCKER_SOCKET_PATH=/var/run/user/1002/docker.sock # Needs to be specified if the docker socket on the host is not located in the default '/var/run/docker.sock'. Otherwise mastercontainer updates will fail. For macos it needs to be '/var/run/docker.sock'
      #- APACHE_DISABLE_REWRITE_IP=
      - NEXTCLOUD_TRUSTED_DOMAINS=mynextclouddomain.org 192.168.1.10 192.168.1.12 # Your domain name + proxy host IP
      - TRUSTED_PROXIES=127.0.0.1 172.18.0.1 172.19.0.1 # proxy host IP
      #- SKIP_DOMAIN_VALIDATION=true
      - AIO_COMMUNITY_CONTAINERS=fail2ban
    # networks: # Is needed when you want to create the nextcloud-aio network with ipv6-support using this file, see the network config at the bottom of the file
      # - nextcloud-aio # Is needed when you want to create the nextcloud-aio network with ipv6-support using this file, see the network config at the bottom of the file
    # # Uncomment the following line when using SELinux
    # security_opt: ["label:disable"]

  # # Optional: Caddy reverse proxy. See https://github.com/nextcloud/all-in-one/blob/main/reverse-proxy.md
  # # You can find further examples here: https://github.com/nextcloud/all-in-one/discussions/588
  # caddy:
  #   image: caddy:alpine
  #   restart: always
  #   container_name: caddy
  #   volumes:
  #     - ./Caddyfile:/etc/caddy/Caddyfile
  #     - ./certs:/certs
  #     - ./config:/config
  #     - ./data:/data
  #     - ./sites:/srv
  #   network_mode: "host"

volumes: # If you want to store the data on a different drive, see https://github.com/nextcloud/all-in-one#how-to-store-the-filesinstallation-on-a-separate-drive
  nextcloud_aio_mastercontainer:
    name: nextcloud_aio_mastercontainer # This line is not allowed to be changed as otherwise the built-in backup solution will not work

# # Optional: If you need ipv6, follow step 1 and 2 of https://github.com/nextcloud/all-in-one/blob/main/docker-ipv6-support.md first and then uncomment the below config in order to activate ipv6 for the internal nextcloud-aio network.
# # Please make sure to uncomment also the networking lines of the mastercontainer above in order to actually create the network with docker-compose
#networks:
 # nextcloud-aio:
  #  name: nextcloud-aio # This line is not allowed to be changed as otherwise the created network will not be used by the other containers of AIO
   # driver: bridge
#     enable_ipv6: true
#     ipam:
#       driver: default
#       config:
#         - subnet: fd12:3456:789a:2::/64 # IPv6 subnet to use
#

My config.php

cat config.php
<?php
$CONFIG = array (
  'one-click-instance' => true,
  'one-click-instance.user-limit' => 100,
  'memcache.local' => '\\OC\\Memcache\\APCu',
  'apps_paths' => 
  array (
    0 => 
    array (
      'path' => '/var/www/html/apps',
      'url' => '/apps',
      'writable' => false,
    ),
    1 => 
    array (
      'path' => '/var/www/html/custom_apps',
      'url' => '/custom_apps',
      'writable' => true,
    ),
  ),
  'appsallowlist' => 
  array (
  ),
  'check_data_directory_permissions' => false,
  'memcache.distributed' => '\\OC\\Memcache\\Redis',
  'memcache.locking' => '\\OC\\Memcache\\Redis',
  'redis' => 
  array (
    'host' => 'nextcloud-aio-redis',
    'password' => '2356ad740518b7c98aab59bd126e8fa466490d4b73777243',
    'port' => 6379,
  ),
  'overwritehost' => 'mynextclouddomain.org',
  'overwriteprotocol' => 'https',
  'passwordsalt' => 'awY4A6o15wJlonVaZVJxffOGdORiWL',
  'secret' => 'MshlNtzxUNQu2tsjsJZd8sQ2VF2DXT1nOuCnbup/kzEkRvYn',
  'trusted_domains' => 
  array (
    0 => 'localhost',
    1 => 'mynextclouddomain.org',
    2 => '192.168.1.12',
  ),
  'datadirectory' => '/mnt/ncdata',
  'dbtype' => 'pgsql',
  'version' => '28.0.2.5',
  'overwrite.cli.url' => 'https://mynextclouddomain.org/',
  'dbname' => 'nextcloud_database',
  'dbhost' => 'nextcloud-aio-database',
  'dbport' => '',
  'dbtableprefix' => 'oc_',
  'dbuser' => 'oc_nextcloud',
  'dbpassword' => 'd41a8e3b30d49aa0113c2d443260a0f42fe76899a6a3bfb9',
  'installed' => true,
  'instanceid' => 'oc9tmlqpbjqi',
  'maintenance' => false,
  'maintenance_window_start' => 1,
  'default_phone_region' => 'DE',
  'updatedirectory' => '/nc-updater',
  'loglevel' => '2',
  'app_install_overwrite' => 
  array (
    0 => 'nextcloud-aio',
    1 => 'wopi',
    2 => 'facerecognition',
  ),
  'log_type' => 'file',
  'logfile' => '/var/www/html/data/nextcloud.log',
  'log_rotate_size' => '10485760',
  'log.condition' => 
  array (
    'apps' => 
    array (
      0 => 'admin_audit',
    ),
  ),
  'preview_max_x' => '2048',
  'preview_max_y' => '2048',
  'jpeg_quality' => '60',
  'enabledPreviewProviders' => 
  array (
    1 => 'OC\\Preview\\Image',
    2 => 'OC\\Preview\\MarkDown',
    3 => 'OC\\Preview\\MP3',
    4 => 'OC\\Preview\\TXT',
    5 => 'OC\\Preview\\OpenDocument',
    6 => 'OC\\Preview\\Movie',
    7 => 'OC\\Preview\\Krita',
    0 => 'OC\\Preview\\Imaginary',
  ),
  'enable_previews' => true,
  'upgrade.disable-web' => true,
  'mail_smtpmode' => 'smtp',
  'trashbin_retention_obligation' => 'auto, 30',
  'versions_retention_obligation' => 'auto, 30',
  'activity_expire_days' => '30',
  'simpleSignUpLink.shown' => false,
  'share_folder' => '/Shared',
  'one-click-instance.link' => 'https://nextcloud.com/all-in-one/',
  'upgrade.cli-upgrade-link' => 'https://github.com/nextcloud/all-in-one/discussions/2726',
  'allow_local_remote_servers' => true,
  'davstorage.request_timeout' => 3600,
  'htaccess.RewriteBase' => '/',
  'dbpersistent' => false,
  'files_external_allow_create_new_local' => false,
  'trusted_proxies' => 
  array (
    0 => '127.0.0.1',
    1 => '::1',
    2 => '172.18.0.1',
    3 => '172.19.0.1',
    4 => '127.0.0.1',
  ),
  'preview_imaginary_url' => 'http://nextcloud-aio-imaginary:9000',
  'mail_sendmailmode' => 'smtp',
  'mail_from_address' => 'webmaster',
  'mail_domain' => 'mydomain.org',
  'mail_smtphost' => 'smtp.provider.de',
  'mail_smtpport' => '587',
  'mail_smtpauth' => 1,
  'mail_smtpname' => 'webmaster@mydomain.org',
  'mail_smtppassword' => 'password',
  'memories.exiftool' => '/var/www/html/custom_apps/memories/bin-ext/exiftool-amd64-musl',
  'memories.vod.path' => '/var/www/html/custom_apps/memories/bin-ext/go-vod-amd64',
  'memories.vod.ffmpeg' => '/usr/bin/ffmpeg',
  'memories.vod.ffprobe' => '/usr/bin/ffprobe',
);

As I was able to determine with my limited knowledge, I believe the remoteip module is not enabled by default in the AIO apache docker.

Regards
mabox