fail2ban-dashboard

A web-based dashboard for fail2ban which uses the /var/run/fail2ban/fail2ban.sock socket to access fail2ban.

Tested with the following fail2ban versions

• 0.11.1
• 0.11.2
• 1.0.1
• 1.0.2
• 1.1.0

If the dashboard should be used with another version, please switch off the version check with the --skip-version-check flag.

Screenshots

Light mode

Dark mode

Usage

Command line

Usage:
  fail2ban-dashboard [flags]
  fail2ban-dashboard [command]

Available Commands:
  completion  Generate the autocompletion script for the specified shell
  help        Help about any command
  version     Print the version number and git hash

Flags:
  -a, --address string             address to serve the dashboard on, also F2BD_ADDRESS (default "127.0.0.1:3000")
      --auth-password string       password for basic auth, also F2BD_AUTH_PASSWORD
      --auth-user string           username for basic auth, also F2BD_AUTH_USER
      --base-path string           base path of the application, also F2BD_BASE_PATH (default "/")
  -c, --cache-dir string           directory to cache GeoIP data, also F2BD_CACHE_DIR (default current working directory)
  -h, --help                       help for fail2ban-dashboard
      --log-level string           log level (trace, debug, info, warn, error), also F2BD_LOG_LEVEL (default "info")
  -m, --metrics                    will provide metrics endpoint, also F2BD_METRICS
      --metrics-address string     address to make metrics available, also F2BD_METRICS_ADDRESS (default "127.0.0.1:9100")
      --refresh-seconds int        fail2ban data refresh in seconds (value from 10 to 600), also F2BD_REFRESH_SECONDS (default 30)
      --scheduled-geoip-download   will keep GeoIP cache update even without accessing the dashboard, also F2BD_SCHEDULED_GEOIP_DOWNLOAD (default true)
      --skip-version-check         skip fail2ban version check (use at your own risk), also F2BD_SKIP_VERSION_CHECK
  -s, --socket string              location of the fail2ban socket, also F2BD_SOCKET (default "/var/run/fail2ban/fail2ban.sock")
      --trust-proxy-headers        trust proxy headers like X-Forwarded-For, also F2BD_TRUST_PROXY_HEADERS

Use "fail2ban-dashboard [command] --help" for more information about a command.

Docker

With Docker use

docker run --user=root -v /var/run/fail2ban/fail2ban.sock:/var/run/fail2ban/fail2ban.sock:ro -p 3000:3000 ghcr.io/webishdev/fail2ban-dashboard:latest

The root user is necessary as by default the fail2ban socket is only accessible for the root user.

Dashboard

When started, check http://127.0.0.1:3000/

Basic authentication can be enabled with the --auth-user and/or --auth-password flags.
When only --auth-user is provided, the password will be generated and show in the logs/console.
When only --auth-password is provided, the user will be named admin.

Metrics

When metrics are enabled with -m the metrics endpoint is available at http://127.0.0.1:9100/metrics and the address can be changed with --metrics-address.

The following example shows which metrics are provided

# HELP f2b_jail_banned_current Amount of banned IPs currently in jail
# TYPE f2b_jail_banned_current gauge
f2b_jail_banned_current{jail="postfix"} 13
f2b_jail_banned_current{jail="sshd"} 33
# HELP f2b_jail_banned_total Amount of banned IPs total in jail
# TYPE f2b_jail_banned_total gauge
f2b_jail_banned_total{jail="postfix"} 13
f2b_jail_banned_total{jail="sshd"} 33
# HELP f2b_jail_count The number of jails in fail2ban
# TYPE f2b_jail_count gauge
f2b_jail_count 2
# HELP f2b_jail_failed_current Amount of failed IPs currently in jail
# TYPE f2b_jail_failed_current gauge
f2b_jail_failed_current{jail="postfix"} 0
f2b_jail_failed_current{jail="sshd"} 0
# HELP f2b_jail_failed_total Amount of failed IPs total in jail
# TYPE f2b_jail_failed_total gauge
f2b_jail_failed_total{jail="postfix"} 0
f2b_jail_failed_total{jail="sshd"} 0
# HELP fail2ban_dashboard_info The fail2ban Dashboard build information
# TYPE fail2ban_dashboard_info gauge
fail2ban_dashboard_info{fail2ban_version="1.1.0",version="development"} 1

Environment variables

Environment variables can be used to set parameters without using command line flags.

Environment Variable	Command Line Flag	Description	Default
F2BD_ADDRESS	-a, --address	Address to serve the dashboard on	127.0.0.1:3000
F2BD_AUTH_PASSWORD	--auth-password	Password for basic auth	-
F2BD_AUTH_USER	--auth-user	Username for basic auth	-
F2BD_BASE_PATH	--base-path	Base path of the application	/
F2BD_CACHE_DIR	-c, --cache-dir	Directory to cache GeoIP data	Current working directory
F2BD_LOG_LEVEL	--log-level	Log level (trace, debug, info, warn, error)	info
F2BD_METRICS	-m, --metrics	Enables Prometheus metrics	false
F2BD_METRICS_ADDRESS	--metrics-address	Address to serve the metrics	127.0.0.1:9100
F2BD_REFRESH_SECONDS	--refresh-seconds	Refresh seconds for fail2ban data (10-600)	30
F2BD_SKIP_VERSION_CHECK	--skip-version-check	Skip fail2ban version check	false
F2BD_SOCKET	-s, --socket	Fail2ban socket path	/var/run/fail2ban/fail2ban.sock
F2BD_TRUST_PROXY_HEADERS	--trust-proxy-headers	Trust proxy headers like X-Forwarded-For	false

Build the application

To build the application, use make with the following options:

make

    build           - Build the application
    
    test            - Run tests
    
    clean           - Remove build artifacts
    
    help            - Show this help message
    
    all             - Run tests and build the application (default)

Inspired by

• https://github.com/fail2ban/fail2ban
• https://gitlab.com/hctrdev/fail2ban-prometheus-exporter/-/tree/main?ref_type=heads
• https://github.com/VerifiedJoseph/intruder-alert?tab=readme-ov-file