In the process of website data crawling, it is often encountered that Cloudflare returns a 403 error. A 403 error from Cloudflare usually means that the server rejected the request, possibly due to anti-crawler mechanisms, security settings, or other restrictions. However, for legitimate data scraping tasks, we need to find a way to solve the problem to ensure the smooth acquisition of the required data. In this article, we'll explore possible reasons why Cloudflare returns a 403 error and introduce some ways to fix it.
- Possible causes of 403 errors
Cloudflare's 403 error is a common anti-crawler measure, which may be caused by the following reasons:
1.1. Robot verification: Cloudflare may require users to perform robot verification to distinguish real users from crawlers. This verification usually includes filling in captchas or other interactive operations.
1.2. Firewall settings: The website administrator can set firewall rules through Cloudflare. If the crawler request triggers certain rules, a 403 error will be returned.
1.3. IP ban: If the IP address of the crawler is banned or marked as a malicious IP, it will be blocked and a 403 error will be returned.
1.4. Request frequency limit: If the crawler sends too frequent requests and exceeds the carrying capacity of the website, it may trigger the frequency limit and return a 403 error.
- How to solve Cloudflare return 403 error
Here are some common ways you can try to resolve Cloudflare returning 403 errors:
2.1. Set reasonable request headers
Cloudflare usually checks fields such as User-Agent and Referer in the request header to determine the legitimacy of the request. We can bypass validation by simulating normal browser behavior by setting reasonable request headers.
2.2. Use proxy IP
If Cloudflare bans or restricts a specific IP, we can use the proxy IP to switch the IP address of the request to bypass the ban.
2.3. Handling robot verification
When the website requires robot verification, we can automatically fill in the verification code through automated tools or use some third-party libraries to process the verification code.
2.4. Adjust request frequency
If the 403 error is caused by the frequency limit, we can properly adjust the frequency of crawler requests to avoid too frequent requests.
Use the ScrapingBypass API to bypass Cloudflare restrictions
While the above methods may be effective in some situations, they are not always the ultimate solution to the problem. In order to solve the problem of Cloudflare returning 403 errors more efficiently and stably, we can consider using the ScrapingBypass API.
The ScrapingBypass API provides us with a one-stop solution that can easily bypass Cloudflare's anti-crawler mechanism, including robot verification, firewall settings, IP bans, and request frequency limits. By sending a request to the ScrapingBypass API, we can get processed data without worrying about being identified as a crawler by Cloudflare.
It is a common problem to encounter Cloudflare returning 403 errors during crawling. We can try to solve the problem by setting reasonable request headers, using proxy IP, handling robot verification, adjusting request frequency, etc. However, in order to bypass Cloudflare's anti-crawler restrictions more efficiently, we can consider using the ScrapingBypass API. The ScrapingBypass API provides us with a simple, stable, and secure solution, allowing us to focus on data scraping and processing without worrying about being blocked by Cloudflare. If you are having trouble with Cloudflare returning 403 errors, the ScrapingBypass API will be your right-hand man.
Using the ScrapingBypass API, you can easily bypass Cloudflare's anti-crawler robot verification, even if you need to send 100,000 requests, you don't have to worry about being identified as a scraper.
A ScrapingBypass API can break through all anti-anti-bot robot inspections, easily bypass Cloudflare verification, CAPTCHA verification, WAF, CC protection, and provides HTTPAPI and Proxy, including interface address, request parameters, return processing; and set Referer, browse Browser fingerprinting device features such as browser UA and headless status.