Bypassing Cloudflare: Anti-Crawler Hacking Solution

Can't get Cloudflare? Try these wildcards.

Recently, some friends who do data collection have complained to me that Cloudflare's anti-crawler mechanism is getting more and more difficult to deal with. It doesn't move, it pops up the CAPTCHA, it makes a 5-second shield, and it also has those brain-burning JS encryption. Don't panic, I'll pull out the bottom of the box of practical experience, we focus on how to use proxy IP to break the game.

Cloudflare anti-climbing triple axe

You have to know your opponent's routine before you can see what you're doing:

1. IP fingerprinting: record your access habits, such as the frequency of requests, operation trajectory
2. TLS fingerprinting: Detect what client you use, whether it is a serious browser
3. Behavioral analysis: sudden surge of visits directly to you to cut off

Dynamic IP pools are the way to go

Collecting with a fixed IP is just looking for death, Cloudflare will pull the plug on you in minutes.Dynamic proxy pool for ipipgoOur team tested effective, remember last year's double eleven grab data, with their residential IP rotation, half an hour to change more than 300 addresses froze without turning over.

Here's a Python example (remember to install the requests library):

import requests

proxies = {
    'http': 'http://用户名:密码@gateway.ipipgo.com:9021',
    'https': 'http://用户名:密码@gateway.ipipgo.com:9021'
}

resp = requests.get('https://目标网站', proxies=proxies, timeout=10)
print(resp.text)

Residential Agent vs.

There's a big difference, so here's a comparison chart for you:

If you run into Cloudflare's 5 second shield, go straight to ipipgo'sU.S. Residential AgentsIt's more than 3 times faster than a regular IP over authentication.

The request head has to be played out.

Don't be silly to use the same User-Agent, to show you a real case: an e-commerce site with a random UA + dynamic IP combination, the collection of the success rate from 23% soared to 79%. remember that each request with Cookies, Cloudflare especially love to check this.

headers = {
    'User-Agent': random.choice(ua_list),
    'Accept-Language': 'en-US,en;q=0.9',
    'Referer': 'https://www.example.com'
}

A practical guide to avoiding the pit

Name a few common mistakes newbies make:

1. request intervals are too regular (use random delays, wiggle between 0.5-3 seconds)
2. ignore SSL authentication (requests.get plus verify = False parameter)
3. rigidly adhere to a certain IP (3 consecutive failures to hurry to change)

Frequently Asked Questions QA

Q: What should I do if my proxy IP is not working?
A: ipipgo's automatic switching function is recommended to open, their home background can be set to fail to automatically change the IP

Q: How many IPs do I need to use at the same time?
A: small projects 50-100 dynamic IP is enough, large collection recommended 500 + IP pools

Q: How to break JS encryption when I encounter it?
A: with Selenium + proxy IP, remember to turn off the WebDriver property

One last thing, now that Cloudflare has upgraded to D7 protection, those free proxies can't handle it at all. Last year we took on a crawler project using ipipgo'sMexico Residential IP+ request header randomization program, hard to capture the success rate of dry to 91%, the father directly renewed the three-year contract. So ah, professional things or have to find professional tools.