Fail2ban Telegram Notifications

Sending fail2ban notifications using a Telegram bot

Installation and configuration

• Add the following two lines, for example, to SSHD in the file /etc/fail2ban/jail.conf, make sure to tab the word telegram.

  action  = iptables[name=SSH, port=22, protocol=tcp]
  		telegram

  Example:

  

• Download the file telegram.conf and move it to /etc/fail2ban/action.d/

• Download the file send_telegram_notif.sh move it to /etc/fail2ban/scripts/

• Modify the file /etc/fail2ban/scripts/send_telegram_notif.sh and add your Token and your Chat ID:

  telegramBotToken=YOUR_BOT_TOKEN
  telegramChatID=YOUR_CHAT_ID

• Make the file executable

  chmod +x /etc/fail2ban/scripts/send_telegram_notif.sh

• Restart the fail2ban service and enjoy!

  systemctl restart fail2ban

Usage

• /etc/fail2ban/scripts/send_telegram_notif.sh -a [ start || stop ] || [ -n $NAME -b $IP || -n $NAME -u $IP ]"
  • -a (action)
  • -n (jail name)
  • -b (ban)
  • -u (unban)

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