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\n\n

\n $\"Latest$ \n $\"Build$ \n $\"Docker$ \n $\"Docker$ \n $\"Docker$ \n $\"Code$ \n $\"Donate$ \n

\n\n## About\n\n🐳 [Fail2ban](https://www.fail2ban.org) Docker image based on Alpine Linux.
\nIf you are interested, [check out](https://hub.docker.com/r/crazymax/) my other 🐳 Docker images!\n\n## Docker\n\n### Environment variables\n\n* `TZ` : The timezone assigned to the container (default `UTC`)\n* `F2B_LOG_TARGET` : Set the log target. This could be a file, SYSLOG, STDERR or STDOUT (default `STDOUT`)\n* `F2B_LOG_LEVEL` : Log level output (default `INFO`)\n* `F2B_DB_PURGE_AGE` : Age at which bans should be purged from the database (default `1d`)\n* `F2B_MAX_RETRY` : Number of failures before a host get banned (default `5`)\n* `F2B_DEST_EMAIL` : Destination email address used solely for the interpolations in configuration files (default `root@localhost`)\n* `F2B_SENDER` : Sender email address used solely for some actions (default `root@$(hostname -f)`)\n* `F2B_ACTION` : Default action on ban (default `%(action_)s`)\n* `F2B_IPTABLES_CHAIN` : Specifies the iptables chain to which the Fail2Ban rules should be added (default `DOCKER-USER`)\n* `SSMTP_HOST` : SMTP server host\n* `SSMTP_PORT` : SMTP server port (default `25`)\n* `SSMTP_HOSTNAME` : Full hostname (default `$(hostname -f)`)\n* `SSMTP_USER` : SMTP username\n* `SSMTP_PASSWORD` : SMTP password\n* `SSMTP_TLS` : SSL/TLS (default `NO`)\n\n> :warning: If you want email to be sent after a ban, you have to configure SSMTP env vars and set F2B_ACTION to `%(action_mw)s` or `%(action_mwl)s`\n\n### Volumes\n\n* `/data` : Contains customs jails, actions and filters and Fail2ban persistent database\n\n## Use this image\n\n### Docker Compose\n\nDocker compose is the recommended way to run this image. Copy the content of folder [examples/compose](examples/compose) in `/var/fail2ban/` on your host for example. Edit the compose and env files with your preferences and run the following commands :\n\n```bash\ndocker-compose up -d\ndocker-compose logs -f\n```\n\n### Command line\n\nYou can also use the following minimal command :\n\n```bash\ndocker run -d --name fail2ban --restart always \\\n --network host \\\n --cap-add NET_ADMIN \\\n --cap-add NET_RAW \\\n -v $(pwd)/data:/data \\\n -v /var/log:/var/log:ro \\\n crazymax/fail2ban:latest\n```\n\n## Notes\n\n### `DOCKER-USER` chain\n\nIn Docker 17.06 and higher through [docker/libnetwork#1675](https://github.com/docker/libnetwork/pull/1675), you can add rules to a new table called `DOCKER-USER`, and these rules will be loaded before any rules Docker creates automatically. This is useful to make `iptables` rules created by Fail2Ban persistent.\n\nIf you have an older version of Docker, you may just change `F2B_IPTABLES_CHAIN` to `FORWARD`. This way, all Fail2Ban rules come before any Docker rules but these rules will now apply to ALL forwarded traffic.\n\nMore info : https://docs.docker.com/network/iptables/\n\n### `DOCKER-USER` and `INPUT` chains\n\nIf your Fail2Ban container is attached to `DOCKER-USER` chain instead of `INPUT`, the rules will be applied **only to containers**. This means that any packets coming into the `INPUT` chain will bypass these rules that now reside under the `FORWARD` chain.\n\nThis implies that [sshd](examples/jails/sshd) jail for example will not work as intended. You can create another Fail2Ban container. Take a look at [this example](examples/compose-multi).\n\n### Use fail2ban-client\n\n[Fail2ban commands](http://www.fail2ban.org/wiki/index.php/Commands) can be used through the container. Here is an example if you want to ban an IP manually :\n\n```bash\ndocker exec -t fail2ban-client set banip \n```\n\n### Custom actions and filters\n\nCustom actions and filters can be added in `/data/action.d` and `/data/filter.d`. If you add an action/filter that already exists, it will be overriden.\n\n> :warning: Container has to be restarted to propagate changes\n\n### Jail examples\n\nJail examples can be found in [examples/jails](examples/jails) to work with this image.\n\n## How can I help ?\n\nAll kinds of contributions are welcome :raised_hands:!
\nThe most basic way to show your support is to star :star2: the project, or to raise issues :speech_balloon:
\nBut we're not gonna lie to each other, I'd rather you buy me a beer or two :beers:!\n\n[![Paypal](.res/paypal.png)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=FRCLKDGE2CQFJ)\n\n## License\n\nMIT. See `LICENSE` for more details.
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halianelf/fail2ban

Tags for halianelf/fail2ban