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title: fail2ban
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---
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<!-- DO NOT EDIT THIS FILE MANUALLY -->
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<!-- Please read the https://github.com/linuxserver/docker-fail2ban/blob/main/.github/CONTRIBUTING.md -->
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# [linuxserver/fail2ban](https://github.com/linuxserver/docker-fail2ban)
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[](https://scarf.sh/gateway/linuxserver-ci/docker/linuxserver%2Ffail2ban)
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[](https://github.com/linuxserver/docker-fail2ban)
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[](https://github.com/linuxserver/docker-fail2ban/releases)
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[](https://github.com/linuxserver/docker-fail2ban/packages)
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[](https://gitlab.com/linuxserver.io/docker-fail2ban/container_registry)
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[](https://quay.io/repository/linuxserver.io/fail2ban)
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[](https://hub.docker.com/r/linuxserver/fail2ban)
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[](https://hub.docker.com/r/linuxserver/fail2ban)
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[](https://ci.linuxserver.io/job/Docker-Pipeline-Builders/job/docker-fail2ban/job/main/)
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[](https://ci-tests.linuxserver.io/linuxserver/fail2ban/latest/index.html)
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[Fail2ban](http://www.fail2ban.org/) is a daemon to ban hosts that cause multiple authentication errors.
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## Supported Architectures
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We utilise the docker manifest for multi-platform awareness. More information is available from docker [here](https://github.com/docker/distribution/blob/master/docs/spec/manifest-v2-2.md#manifest-list) and our announcement [here](https://blog.linuxserver.io/2019/02/21/the-lsio-pipeline-project/).
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Simply pulling `lscr.io/linuxserver/fail2ban:latest` should retrieve the correct image for your arch, but you can also pull specific arch images via tags.
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The architectures supported by this image are:
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| Architecture | Available | Tag |
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| :----: | :----: | ---- |
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| x86-64 | ✅ | amd64-\<version tag\> |
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| arm64 | ✅ | arm64v8-\<version tag\> |
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| armhf| ✅ | arm32v7-\<version tag\> |
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## Application Setup
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This container is designed to allow fail2ban to function at the host level, as well as at the docker container level.
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If you are running applications on the host, you will need to set the `chain` to `INPUT` in the jail for that application.
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All jails require the ability to read the application log files.
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We recommend mounting each application's logs as a volume to the container (illustrated by the optional volumes in our documentation).
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### Configuration Files
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On first run, the container will create a number of folders and files in `/config`. The default configurations for fail2ban are all disabled by default.
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Please refer to the [Configuration README](https://github.com/linuxserver/fail2ban-confs/blob/master/README.md), which can be viewed in our repository, or in your config folder at `/config/fail2ban/README.md`.
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### Remote Logs
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The `/remotelogs` path is designed to act as a parent for all log files you would like fail2ban to be able to use.
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Each log file should be mounted in a subfolder underneath `/remotelogs`, ex:
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- `/remotelogs/nginx/` would mount a folder containing the nginx logs to the container
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- `/remotelogs/unificontroller/server.log` would mount a single file for the unifi controller logs to the container
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## Usage
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To help you get started creating a container from this image you can either use docker-compose or the docker cli.
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### docker-compose (recommended, [click here for more info](https://docs.linuxserver.io/general/docker-compose))
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```yaml
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---
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version: "2.1"
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services:
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fail2ban:
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image: lscr.io/linuxserver/fail2ban:latest
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container_name: fail2ban
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cap_add:
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- NET_ADMIN
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- NET_RAW
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network_mode: host
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environment:
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- PUID=1000
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- PGID=1000
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- TZ=America/New_York
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volumes:
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- /path/to/appdata/config:/config
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- /var/log:/var/log:ro
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- /path/to/airsonic/airsonic.log:/remotelogs/airsonic/airsonic.log:ro #optional
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- /path/to/apache2/log:/remotelogs/apache2:ro #optional
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- /path/to/audit/audit.log:/remotelogs/audit/audit.log:ro #optional
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- /path/to/authelia/authelia.log:/remotelogs/authelia/authelia.log:ro #optional
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- /path/to/emby/embyserver.txt:/remotelogs/emby/embyserver.txt:ro #optional
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- /path/to/exim/mainlog:/remotelogs/exim/mainlog:ro #optional
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- /path/to/filebrowser/filebrowser.log:/remotelogs/filebrowser/filebrowser.log:ro #optional
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- /path/to/gitea/gitea.log:/remotelogs/gitea/gitea.log:ro #optional
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- /path/to/homeassistant/home-assistant.log:/remotelogs/homeassistant/home-assistant.log:ro #optional
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- /path/to/lighttpd/error.log:/remotelogs/lighttpd/error.log:ro #optional
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- /path/to/nextcloud/nextcloud.log:/remotelogs/nextcloud/nextcloud.log:ro #optional
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- /path/to/nginx/log:/remotelogs/nginx:ro #optional
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- /path/to/nzbget/nzbget.log:/remotelogs/nzbget/nzbget.log:ro #optional
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- /path/to/overseerr/overseerr.log:/remotelogs/overseerr/overseerr.log:ro #optional
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- /path/to/prowlarr/prowlarr.txt:/remotelogs/prowlarr/prowlarr.txt:ro #optional
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- /path/to/radarr/radarr.txt:/remotelogs/radarr/radarr.txt:ro #optional
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- /path/to/roundcube/errors:/remotelogs/roundcube/errors:ro #optional
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- /path/to/sabnzbd/sabnzbd.log:/remotelogs/sabnzbd/sabnzbd.log:ro #optional
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- /path/to/sonarr/sonarr.txt:/remotelogs/sonarr/sonarr.txt:ro #optional
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- /path/to/unificontroller/server.log:/remotelogs/unificontroller/server.log:ro #optional
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- /path/to/vaultwarden/vaultwarden.log:/remotelogs/vaultwarden/vaultwarden.log:ro #optional
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- /path/to/vsftpd/vsftpd.log:/remotelogs/vsftpd/vsftpd.log:ro #optional
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restart: unless-stopped
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```
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### docker cli ([click here for more info](https://docs.docker.com/engine/reference/commandline/cli/))
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```bash
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docker run -d \
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--name=fail2ban \
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--net=host \
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--cap-add=NET_ADMIN \
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--cap-add=NET_RAW \
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-e PUID=1000 \
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-e PGID=1000 \
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-e TZ=America/New_York \
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-v /path/to/appdata/config:/config \
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-v /var/log:/var/log:ro \
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-v /path/to/airsonic/airsonic.log:/remotelogs/airsonic/airsonic.log:ro `#optional` \
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-v /path/to/apache2/log:/remotelogs/apache2:ro `#optional` \
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-v /path/to/audit/audit.log:/remotelogs/audit/audit.log:ro `#optional` \
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-v /path/to/authelia/authelia.log:/remotelogs/authelia/authelia.log:ro `#optional` \
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-v /path/to/emby/embyserver.txt:/remotelogs/emby/embyserver.txt:ro `#optional` \
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-v /path/to/exim/mainlog:/remotelogs/exim/mainlog:ro `#optional` \
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-v /path/to/filebrowser/filebrowser.log:/remotelogs/filebrowser/filebrowser.log:ro `#optional` \
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-v /path/to/gitea/gitea.log:/remotelogs/gitea/gitea.log:ro `#optional` \
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-v /path/to/homeassistant/home-assistant.log:/remotelogs/homeassistant/home-assistant.log:ro `#optional` \
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-v /path/to/lighttpd/error.log:/remotelogs/lighttpd/error.log:ro `#optional` \
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-v /path/to/nextcloud/nextcloud.log:/remotelogs/nextcloud/nextcloud.log:ro `#optional` \
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-v /path/to/nginx/log:/remotelogs/nginx:ro `#optional` \
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-v /path/to/nzbget/nzbget.log:/remotelogs/nzbget/nzbget.log:ro `#optional` \
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-v /path/to/overseerr/overseerr.log:/remotelogs/overseerr/overseerr.log:ro `#optional` \
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-v /path/to/prowlarr/prowlarr.txt:/remotelogs/prowlarr/prowlarr.txt:ro `#optional` \
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-v /path/to/radarr/radarr.txt:/remotelogs/radarr/radarr.txt:ro `#optional` \
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-v /path/to/roundcube/errors:/remotelogs/roundcube/errors:ro `#optional` \
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-v /path/to/sabnzbd/sabnzbd.log:/remotelogs/sabnzbd/sabnzbd.log:ro `#optional` \
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-v /path/to/sonarr/sonarr.txt:/remotelogs/sonarr/sonarr.txt:ro `#optional` \
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-v /path/to/unificontroller/server.log:/remotelogs/unificontroller/server.log:ro `#optional` \
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-v /path/to/vaultwarden/vaultwarden.log:/remotelogs/vaultwarden/vaultwarden.log:ro `#optional` \
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-v /path/to/vsftpd/vsftpd.log:/remotelogs/vsftpd/vsftpd.log:ro `#optional` \
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--restart unless-stopped \
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lscr.io/linuxserver/fail2ban:latest
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```
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## Parameters
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Docker images are configured using parameters passed at runtime (such as those above). These parameters are separated by a colon and indicate `<external>:<internal>` respectively. For example, `-p 8080:80` would expose port `80` from inside the container to be accessible from the host's IP on port `8080` outside the container.
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### Ports (`-p`)
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| Parameter | Function |
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| :----: | --- |
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#### Networking (`--net`)
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| Parameter | Function |
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| :-----: | --- |
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| `--net=host` | Shares host networking with container. |
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### Environment Variables (`-e`)
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| Env | Function |
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| :----: | --- |
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| `PUID=1000` | for UserID - see below for explanation |
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| `PGID=1000` | for GroupID - see below for explanation |
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| `TZ=America/New_York` | Specify a timezone to use EG America/New_York |
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### Volume Mappings (`-v`)
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| Volume | Function |
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| :----: | --- |
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| `/config` | Contains all relevant configuration files. |
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| `/var/log:ro` | Host logs. Mounted as Read Only. |
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| `/remotelogs/airsonic/airsonic.log:ro` | Optional path to airsonic log file. Mounted as Read Only. |
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| `/remotelogs/apache2:ro` | Optional path to apache2 log folder. Mounted as Read Only. |
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| `/remotelogs/audit/audit.log:ro` | Optional path to auditd log file. Mounted as Read Only. |
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| `/remotelogs/authelia/authelia.log:ro` | Optional path to authelia log file. Mounted as Read Only. |
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| `/remotelogs/emby/embyserver.txt:ro` | Optional path to emby log file. Mounted as Read Only. |
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| `/remotelogs/exim/mainlog:ro` | Optional path to exim log file. Mounted as Read Only. |
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| `/remotelogs/filebrowser/filebrowser.log:ro` | Optional path to filebrowser log file. Mounted as Read Only. |
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| `/remotelogs/gitea/gitea.log:ro` | Optional path to gitea log file. Mounted as Read Only. |
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| `/remotelogs/homeassistant/home-assistant.log:ro` | Optional path to homeassistant log file. Mounted as Read Only. |
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| `/remotelogs/lighttpd/error.log:ro` | Optional path to lighttpd error log file. Mounted as Read Only. |
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| `/remotelogs/nextcloud/nextcloud.log:ro` | Optional path to nextcloud log file. Mounted as Read Only. |
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| `/remotelogs/nginx:ro` | Optional path to nginx log folder. Mounted as Read Only. |
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| `/remotelogs/nzbget/nzbget.log:ro` | Optional path to nzbget log file. Mounted as Read Only. |
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| `/remotelogs/overseerr/overseerr.log:ro` | Optional path to overseerr log file. Mounted as Read Only. |
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| `/remotelogs/prowlarr/prowlarr.txt:ro` | Optional path to prowlarr log file. Mounted as Read Only. |
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| `/remotelogs/radarr/radarr.txt:ro` | Optional path to radarr log file. Mounted as Read Only. |
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| `/remotelogs/roundcube/errors:ro` | Optional path to roundcube error log file. Mounted as Read Only. |
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| `/remotelogs/sabnzbd/sabnzbd.log:ro` | Optional path to sabnzbd log file. Mounted as Read Only. |
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| `/remotelogs/sonarr/sonarr.txt:ro` | Optional path to sonarr log file. Mounted as Read Only. |
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| `/remotelogs/unificontroller/server.log:ro` | Optional path to unificontroller server log file. Mounted as Read Only. |
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| `/remotelogs/vaultwarden/vaultwarden.log:ro` | Optional path to vaultwarden log file. Mounted as Read Only. |
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| `/remotelogs/vsftpd/vsftpd.log:ro` | Optional path to vsftpd log file. Mounted as Read Only. |
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#### Miscellaneous Options
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| Parameter | Function |
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| :-----: | --- |
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### Portainer notice
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{% hint style="warning" %}
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This image utilises `cap_add` or `sysctl` to work properly. This is not implemented properly in some versions of Portainer, thus this image may not work if deployed through Portainer.
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{% endhint %}
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## Environment variables from files (Docker secrets)
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You can set any environment variable from a file by using a special prepend `FILE__`.
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As an example:
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```bash
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-e FILE__PASSWORD=/run/secrets/mysecretpassword
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```
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Will set the environment variable `PASSWORD` based on the contents of the `/run/secrets/mysecretpassword` file.
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## Umask for running applications
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For all of our images we provide the ability to override the default umask settings for services started within the containers using the optional `-e UMASK=022` setting.
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Keep in mind umask is not chmod it subtracts from permissions based on it's value it does not add. Please read up [here](https://en.wikipedia.org/wiki/Umask) before asking for support.
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## User / Group Identifiers
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When using volumes (`-v` flags), permissions issues can arise between the host OS and the container, we avoid this issue by allowing you to specify the user `PUID` and group `PGID`.
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Ensure any volume directories on the host are owned by the same user you specify and any permissions issues will vanish like magic.
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In this instance `PUID=1000` and `PGID=1000`, to find yours use `id user` as below:
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```bash
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$ id username
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uid=1000(dockeruser) gid=1000(dockergroup) groups=1000(dockergroup)
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```
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## Docker Mods
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[](https://mods.linuxserver.io/?mod=fail2ban "view available mods for this container.") [](https://mods.linuxserver.io/?mod=universal "view available universal mods.")
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We publish various [Docker Mods](https://github.com/linuxserver/docker-mods) to enable additional functionality within the containers. The list of Mods available for this image (if any) as well as universal mods that can be applied to any one of our images can be accessed via the dynamic badges above.
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## Support Info
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* Shell access whilst the container is running:
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* `docker exec -it fail2ban /bin/bash`
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* To monitor the logs of the container in realtime:
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* `docker logs -f fail2ban`
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* Container version number
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* `docker inspect -f '{{ index .Config.Labels "build_version" }}' fail2ban`
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* Image version number
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* `docker inspect -f '{{ index .Config.Labels "build_version" }}' lscr.io/linuxserver/fail2ban:latest`
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## Versions
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* **09.08.22:** - Initial Release.
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