THE LAB #14: Scraping Cloudflare Protected Websites (early 2023 version)
How to scrape Cloudflare protected websites in 2023
This article is sponsored by MobileHop, your mobile IP proxy provider.
MobileHop provides native mobile IPs on dedicated 4G/5G modems via Verizon and AT&T Wireless to bypass almost all website blocks. A single multihop license gives you access to 50 USA markets and growing!
One more self-promotion announcement: thank you to anyone who yesterday followed the Zyte webinar about data quality in web scraping, where I was participating as a guest. You can still see it on demand via the Zyte webinar portal.
The Web Scraping Club is a free weekly newsletter about web scraping. Once every two weeks, I publish The Lab, paid content with deep dives on more technical aspects and solutions to common issues, with also code on a GitHub repository. You can access to the following articles using a 7 days trial and then subscribe if you find them useful.
In the latest post, we have seen how to scrape a Kasada-protected website, using both free and commercial tools.
Many of you found it useful for their projects, despite Kasada seeming to have a relatively small market share in the business.
Since it’s been a while since I’ve written about Cloudflare solutions and things do evolve rapidly in this industry, I’ve decided to update my old article about scraping Cloudflare-protected websites, using the same format as the Kasada one but with a difference. We’ll test the solutions both on a local environment and on a remote virtual machine on AWS. This is because the website we’re going to analyze has Cloudflare activated probably at the highest levels of paranoia and you can’t even browse it from there.
What is Cloudflare and how it works?
Cloudflare is a global technology company that provides a variety of services to enhance the performance, security, and reliability of websites and internet applications. The company operates a vast network of data centers worldwide, which allows it to offer content delivery, DDoS protection, and other services to its clients. Cloudflare's solutions are designed to optimize website performance, reduce latency, and safeguard websites from various online threats, including cyberattacks and malicious bots.
Cloudflare Bot Management is a specific solution provided by Cloudflare that aims to identify and control the activities of automated bots on a website or application.
This solution employs machine learning and behavioral analysis to differentiate between legitimate and malicious bots. By analyzing traffic patterns, request rates, and other factors, it can accurately identify and block harmful bots in real-time, while allowing legitimate bots to access the site.
Some key features of Cloudflare Bot Management include:
Advanced bot detection: By using machine learning algorithms and heuristics, Cloudflare can identify and block a wide range of malicious bots, including those that may be using sophisticated evasion techniques.
Customizable rules: Cloudflare allows users to create custom rules to manage bots according to their specific needs, enabling them to fine-tune the level of protection and control.
Real-time analytics: Cloudflare provides users with real-time insights into bot traffic, allowing them to monitor and analyze bot activity on their website or application.
Integration with other Cloudflare services: The bot management solution can be easily integrated with other Cloudflare offerings, such as the Web Application Firewall (WAF) and rate limiting, to provide comprehensive protection against various online threats.
One of the major issues when tackling Cloudflare is its customization of the rules. Some scraper might work for one website but not for another one. For this test, I’ve chosen one of the toughest websites that recently increased its anti-bot restrictions level to the highest possible.
Playwright with Chrome
I’ve used the same setup we have seen in the Kasada post and, when run locally, the solution allows me to open the home page.
While running on a VM on AWS, we still get blocked on the first try with a challenge
Playwright with Firefox
Let’s try then Playwright with Firefox, first on the local environment and then on AWS VM.
Again, we got the same results as the Chrome try. On the local environment works like a charm, but from the AWS VM, it requires bypassing the challenge.
Let’s try then with the Undetected Chromedriver again in both environments.
Local setup works, while on AWS again the same result, we need to bypass a challenge to scrape the website.
Without any surprise, also a test with Pyppeteer had the same results.
Final thoughts on the free solutions
If your target, like mine, is to run a large number of scrapers in an automatic and cheap way, this situation poses several challenges. I’ve tried to run these scrapers on AWS, but from GPC and with proxies from both of them the results are the same. And we cannot rely on home computers for our large-scale web scraping projects. So I needed to expand my research for a solution to commercial ones, and this is exactly what I meant when, some months ago, I wrote that the costs of web scrapers are getting higher. But if you have any solution, I’d ve glad to hear them on our Discord Server or via mail at firstname.lastname@example.org
Playwright with GoLogin
Keep reading with a 7-day free trial
Subscribe to The Web Scraping Club to keep reading this post and get 7 days of free access to the full post archives.