Fine-Tuning Cloudflare: Allowing Crawlers Without Compromising Security

Cloudflare, a leading web security and performance company, offers robust protection against malicious bots and unwanted traffic. While these measures are essential for website security, they can sometimes hinder legitimate crawlers like search engine bots or analytics tools.

In this guide, we'll explore the benefits and drawbacks of allowing crawlers on your website, delve into Cloudflare's settings, and learn how to fine-tune your configuration to ensure these crawlers have seamless access.

Advantages of Allowing Crawlers

Before we dive into the technical aspects, let's highlight why allowing crawlers on your website is crucial:

  1. Improved Visibility: Allowing search engine bots enhances your website's visibility on search engine results pages (SERPs). This means more organic traffic and higher rankings.
  2. Accurate Analytics: Crawlers provide valuable data that you can use to analyse user behaviour, track website performance, and make informed decisions.
  3. Enhanced User Experience: When your website is indexed correctly, users can find your content more easily, leading to a better user experience.

Disadvantages of Allowing Crawlers

While there are clear advantages, there are also some potential downsides to consider:

  1. Increased Server Load: Crawlers can generate significant server load, affecting website performance, especially on shared hosting plans.
  2. Security Risks: Allowing too many or unidentified crawlers can pose security risks if they have malicious intent.
  3. Bandwidth Consumption: Frequent crawling can consume considerable bandwidth, potentially impacting your hosting costs.

Cloudflare Settings and What to Do

Now, let's get into the nitty-gritty of how to allow crawlers on your website while maintaining security:

1. Cloudflare WAF Rules

  • Navigate to your Cloudflare account and select the desired website.
  • Under the "Security" menu, access "Firewall."
  • Configure the Web Application Firewall (WAF) rules based on your plan:
    • Free Plan: Ensure "Bot Fight Mode" is turned off.
    • Pro Plan: Allow "Definitely automated" and "Verified bots," and disable "JavaScript Detections."
    • Business or Enterprise Plan: Follow the settings for the Pro plan, and additionally allow "Likely automated." Disable "Static resource protection."

2. User Agent Exceptions

  • In Cloudflare, go to "Firewall" and then "Bot Fight Mode."
  • Select "User Agent Blocking."
  • Add exceptions for legitimate crawlers by specifying user agents. This ensures that known search engine bots can access your site.

3. IP Rules

  • Under "Security," choose "Firewall," and then "IP Access Rules."
  • Create a rule to whitelist the IP addresses associated with trusted crawlers, allowing them unrestricted access.


By optimizing your Cloudflare settings and allowing legitimate crawlers, you can reap the benefits of improved visibility, accurate analytics, and enhanced user experiences without compromising security.

Remember to regularly review and adjust these settings to stay ahead in the ever-evolving landscape of web crawling.