Ansible Role: fail2ban

An Ansible Role that installs and configure fail2ban 2.x on Debian/Ubuntu, ArchLinux and ArtixLinux (mabybe also on other openrc based Systemes).

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Further development of this Ansible role has been moved to Collection bodsch.core. This repository will therefore no longer be actively maintained.

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Requirements & Dependencies

None

Operating systems

Tested on

• ArchLinux
• Debian based
  • Debian 10 / 11 / 12
  • Ubuntu 20.04 / 22.04

RedHat-based systems are no longer officially supported! May work, but does not have to.

Role Variables

Available variables are listed below, along with default values (see defaults/main.yaml):

fail2ban_ignoreips

can be an IP address, a CIDR mask or a DNS host.

fail2ban_conf

fail2ban_jail

fail2ban_path_definitions

fail2ban_jails

fail2ban_jail

Example Playbook

see into molecule test and configuration

fail2ban_ignoreips:
  - 127.0.0.1/8
  - 192.168.0.0/24

fail2ban_conf:
  default:
    loglevel: INFO
    logtarget: "/var/log/fail2ban.log"
    syslogsocket: auto
    socket: /run/fail2ban/fail2ban.sock
    pidfile: /run/fail2ban/fail2ban.pid
    dbfile: /var/lib/fail2ban/fail2ban.sqlite3
    dbpurgeage: 1d
    dbmaxmatches: 10
  definition: {}
  thread:
    stacksize: 0

fail2ban_jail:
  default:
    ignoreips: "{{ fail2ban_ignoreips }}"
    bantime: 600
    maxretry: 3
    findtime: 3200
    backend: auto
    usedns: warn
    logencoding: auto
    jails_enabled: false
  actions:
    destemail: root@localhost
    sender: root@localhost
    mta: sendmail
    protocol: tcp
    chain: INPUT
    banaction: iptables-multiport

fail2ban_jails:
  - name: ssh
    enabled: true
    port: ssh
    filter: sshd
    logpath: /var/log/authlog.log
    findtime: 3200
    bantime: 86400
    maxretry: 2
  - name: ssh-breakin
    enabled: true
    port: ssh
    filter: sshd-break-in
    logpath: /var/log/authlog.log
    maxretry: 2
  - name: ssh-ddos
    enabled: true
    port: ssh
    filter: sshd-ddos
    logpath: /var/log/authlog.log
    maxretry: 2

Contribution

Please read Contribution

Development, Branches (Git Tags)

The master Branch is my Working Horse includes the "latest, hot shit" and can be complete broken!

If you want to use something stable, please use a Tagged Version!

Author

• Bodo Schulz

License

Apache

FREE SOFTWARE, HELL YEAH!