WP fail2ban – Advanced Security Plugin

fail2ban は、ブルート フォース攻撃を防ぐために実装できる最も簡単で効果的なセキュリティ対策の1つです。

WP fail2ban provides the link between WordPress and fail2ban:

WPf2b には、wordpress-hard.conf、wordpress-soft.conf、wordpress-extra.conf という3つのfail2ban フィルターが搭載されています。これらは、即時の禁止 (hard) と伝統的なより緩やかなアプローチ (soft) を分けて考えられるように設計されており、カスタム設定のための追加ルールもあります。

機能

• Failed Login Attempts The very first feature of WPf2b: logging failed login attempts so the IP can be banned. Just as useful today as it was then.

• Block User Enumeration One of the most common precursors to a password-guessing brute force attack is user enumeration. WPf2b can block it, stopping the attack before it starts.

• Block username logins Sometimes it’s not possible to block user enumeration (for example, if your theme provides Author profiles). WPf2b can require users to login with their email address instead of their username.

• Blocking Users Anther of the older WPf2b features: the login process can be aborted for specified usernames. Say a bot collected your site’s usernames before you blocked user enumeration. Once you’ve changed all the usernames, add the old ones to the list; anything using them will trigger a “hard” fail.

• Empty Username Login Attempts Some bots will try to login without a username; harmless, but annoying. These attempts are logged as a “soft” fail so the more persistent bots will be banned.

• Spam WPf2b will log a spammer’s IP address as a “hard” fail when their comment is marked as spam; the Premium version will also log the IP when Akismet discards “obvious” spam.

• Attempted Comments Some spam bots try to comment on everything, even things that aren’t there. WPf2b detects these and logs them as a “hard” fail.

• Pingbacks Pingbacks are a great feature, but they can be abused to attack the rest of the WWW. Rather than disable them completely, WPf2b effectively rate-limits potential attackers by logging the IP address as a “soft” fail.

• Block XML‑RPC Requests [Premium] The only reason most sites need XML‑RPC (other than Pingbacks) is for Jetpack; WPf2b Premium can block XML‑RPC while allowing Jetpack and/or Pingbacks.

• Block Countries [Premium] Sometimes you just need a bigger hammer – if you’re seeing nothing but attacks from some countries, block them!

• Cloudflare and Proxy Servers WPf2b will work with Cloudflare, and the Premium version will automatically update the list of Cloudflare IP addresses. You can also configure your own list of trusted proxies.

• 新しい – syslog ダッシュボード ウィジェット 何が記録されているのか疑問に思ったことはありますか? 新しいダッシュボードウィジェットには、最後の5つのメッセージが表示されます。Premium バージョンでは、攻撃の分析と防止に役立つ完全な履歴が保持されます。

• Site Health Check WPf2b will (try to) check that your fail2ban configuration is sane and that the filters are up to date; out-of-date filters are the primary cause of WPf2b not working as well as it can. When did you last run the Site Health tool?

• mu-plugins サポート WPf2b は、必用プラグインとして簡単に構成できます – 設定を見てください。

• API to Extend WPf2b If your plugin can detect behaviour which should be blocked, why reinvent the wheel?

• Event Hooks [Premium] Need to do something special when WPf2b detects a particular event? There’s a hook for that.

Premium

• Web Application Firewall (WAF)
• Akismet support.
• Block XML‑RPC while allowing Jetpack and/or Pingbacks.
• Block Countries.
• Auto-update Cloudflare IPs.
• Event log.
• Event hooks.