なぜCloudflareは私をブロックするのですか?

クラウドフレア

Cloudflare stands out as a leading provider in the web services landscape, offering a comprehensive suite of tools aimed at optimizing website performance, bolstering security, and ensuring reliability. Positioned as both a content delivery network (CDN) and DNS provider, Cloudflare acts as a vital intermediary between website visitors and hosting servers. Its significance in SEO transcends traditional CDN functionalities, offering a range of features tailored to elevate websites’ search engine visibility and user experience. 

Central to Cloudflare’s SEO impact is its prowess in improving website loading speed and accessibility. Leveraging a global network of servers for content caching, Cloudflare minimizes the physical distance between users and website data. This translates to expedited load times and enhanced browsing experiences, aligning seamlessly with Google’s emphasis on page speed as a crucial ranking factor. 

Beyond speed optimization, Cloudflare plays a pivotal role in fortifying website security against various online threats, including DDoS attacks, malware, and bot traffic. Through its Web Application Firewall (WAF) and SSL encryption, Cloudflare provides robust protection, fostering trust between search engines, site visitors, and site owners alike. 

Moreover, Cloudflare’s DNS services contribute significantly to SEO by offering advanced DNS management functionalities. These include DNSSEC for heightened security, DNS analytics for monitoring performance, and DNS firewall capabilities to mitigate attacks, ensuring uninterrupted website availability and preserving SEO rankings. 

Cloudflare also empowers site owners with comprehensive insights into website traffic and performance through its analytics and reporting tools. By monitoring metrics such as bandwidth usage, traffic patterns, and page load times, site owners can make data-driven decisions to refine their SEO strategies and measure the impact of optimizations over time. Additionally, Cloudflare’s flexible pricing plans cater to a diverse range of website sizes and budgets, making its services accessible to businesses of all scales. 

Coupled with browser extensions and APIs that streamline website management tasks, Cloudflare ensures that SEO benefits are within reach for businesses, regardless of their financial resources or technical expertise. 

In essence, Cloudflare’s multifaceted approach to website optimization, encompassing speed, security, DNS management, and analytics, positions it as a pivotal ally for site owners looking to enhance their SEO efforts and deliver exceptional user experiences.

So, if Cloudflare is blocking you, it’s likely because the security settings on the website you’re trying to access have identified your connection as potentially suspicious or harmful. Below are some  of the common reasons for Cloudflare blocking your access include:

IP reputation

クラウドフレア は、スパム、ハッキングの試み、その他の悪質な活動で知られるIPアドレスのリストを管理しています。あなたのIPアドレスがこのリストに載っていたり、評判が悪い場合、ブロックされる可能性があります。

High-security settings

ウェブサイトの所有者がCloudflareのセキュリティ設定を高いレベルに設定し、受信トラフィックをより積極的にフィルタリングしている可能性があります。このような場合、正当なユーザーであってもブロックされたり、チャレンジされたりする可能性があります。

Rate limiting

Cloudflareは、DDoS攻撃や自動化されたスクレイピングの試みを示す可能性があるため、短期間にあまりにも多くのリクエストを行うIPアドレスからのアクセスをブロックまたは制限することができます。

Browser or User-agent issues

Using an outdated browser, a non-standard user agent, or having disabled cookies and JavaScript might trigger Cloudflare’s security measures.

VPN or Proxy usage

VPN、プロキシ、またはTorを使用すると、これらのツールが悪意のある活動を隠すために使用されることが多いため、Cloudflareがお客様の接続を疑わしいと判断することがあります。

Firewall rules

ウェブサイトの所有者は、特定のIPアドレス、国、またはユーザーエージェントをブロックする特定のファイアウォールルールをCloudflareに設定している可能性があります。

How to fix CloudFlare blocking you:

この問題を解決するには、以下をお試しください:

  1. ブラウザのキャッシュとクッキーを消去し、以下のことを確認してください。 ジャバスクリプト が有効になっている。
  2. Update your browser to the latest version, or try using a different browser.
  3. Temporarily disable your VPN or proxy if you are using one.
  4. インターネット接続を確認し、モデムまたはルーターを再起動して新しいIPアドレスを取得します。
  5. ご自身のIPアドレスが誤ってフラグを立てられたと思われる場合は、ウェブサイトの所有者またはCloudflareのサポートに連絡して、IPアドレスの見直しを依頼することができます。
  6. Tether from your phone or access the website from a local coffee shop.

これらの措置は、ウェブサイトとそのユーザーをセキュリティ上の脅威から保護するために設けられていることを忘れないでください。ブロッキングはイライラさせるかもしれませんが、その意図は、すべての人にとって安全なオンライン環境を維持することです。

How Do I Know If I Have Been Blocked by Cloudflare? 

If you suspect that you’ve been blocked by Cloudflare, there are several indicators to consider:

  • Access Denied Page: If you encounter an “Access Denied” message when trying to access a website, it could indicate that Cloudflare has blocked your access.
  • CAPTCHA 課題: Cloudflare may present CAPTCHA challenges to users if it detects suspicious behavior or potential threats. If you repeatedly encounter CAPTCHAs when accessing a website, it could suggest that Cloudflare is actively monitoring and potentially blocking your access.
  • Ray ID: Cloudflare often displays a “Ray ID” along with error messages. This unique identifier helps Cloudflare support teams identify and troubleshoot issues. If you see a Ray ID along with an error message, it indicates that Cloudflare is involved in managing the website’s traffic.
  • Screenshot エラー: Taking a screenshot of the error message or page can provide visual evidence of the Cloudflare block, which can be useful for troubleshooting and support purposes. 

How Does Cloudflare Block Websites? 

Cloudflare employs various mechanisms to block access to websites for specific users or IP addresses:

  • IP Blocking: Cloudflare can block access based on IP addresses associated with malicious activity, spam, or other threats. This proactive approach helps mitigate security risks and protect websites from potential attacks.
  • Firewall Rules: Cloudflare’s Firewall Rules allow site owners to create custom rulesets to block or challenge traffic based on specific criteria, such as IP address, country of origin, or user agent. This granular control enables site owners to tailor their security policies to their specific needs and threat landscape. 
  • Challenge Mechanisms: Cloudflare may present CAPTCHA challenges, or JavaScript challenges to users to verify their identity or mitigate suspicious behavior. These challenges serve as additional layers of security to prevent automated bots and malicious actors from accessing websites. 

How Long Does a Cloudflare Block Last? 

The duration of a Cloudflare block can vary depending on the reason for the block and the actions taken by the site owner:

  • Temporary Blocks: In some cases, Cloudflare may impose temporary blocks on users or IP addresses for a specific period. These blocks are often lifted automatically after a designated time or once the triggering conditions are no longer present.
  • Permanent Blocks: In more severe cases, Cloudflare may impose permanent blocks on users or IP addresses associated with persistent malicious activity or violations of the site owner’s security policies. These blocks may require manual intervention by the site owner to lift. 

Resolution Steps: If you believe you’ve been incorrectly blocked by Cloudflare, you can reach out to the site owner or administrator for assistance. They can review the block logs, identify the reason for the block, and take appropriate actions to resolve the issue and restore access.

これらの措置は、ウェブサイトとそのユーザーをセキュリティ上の脅威から保護するために設けられていることを忘れないでください。ブロッキングはイライラさせるかもしれませんが、その意図は、すべての人にとって安全なオンライン環境を維持することです。

CloudflareはDiscordをブロックしているのか? この記事を読んでみてほしい: https://seonorth.ca/discord/cloudflare-blocking/

よくあるご質問

  • Cloudflareによってブロックされたかどうかを知るにはどうすればよいですか?
  • Cloudflareはどのようにウェブサイトをブロックするのですか?
  • Cloudflareブロックの有効期間は?
  • Cloudflareで自分のIPアドレスのブロックを解除するには?

公開日: 2023-03-31
Updated on: 2024-02-13

アイザック・アダムス=ハンズのアバター

アイザック・アダムス・ハンズ

アイザック・アダムス・ハンズは、検索エンジン最適化サービスを提供するSEO North社でSEOディレクターを務めています。SEOのプロフェッショナルとして、アイザックはオンページSEO、オフページSEO、テクニカルSEOの分野で豊富な専門知識を持ち、競合他社を圧倒している。
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