Python Crawler 2025: 5 Strategies for Bypassing Backcrawl with Selenium

Can't get around IP blocking? Try this "Shifting Shadows" trick.

Brothers engaged in crawling understand, now anti-climbing system thieves, not moving to block the IP, especially with Selenium, such as with browser features, is simply a living target. Last year I had a project, just run half an hour was blocked more than 200 IP, almost smashed the keyboard.

Then I found an evil trick--Putting a Proxy Vest on SeleniumThe principle is similar to playing an online game and opening a small number. The principle is just like playing online games to open a small number, every time you log in a different identity. Here we recommend the use of ipipgo's dynamic residential proxy, their IP pool is deep enough, I have tested the continuous 24 hours running data without being ban.

from selenium import webdriver

proxy = "123.123.123.123:8888" proxy address provided by ipipgo
chrome_options = webdriver.ChromeOptions()
chrome_options.add_argument(f'--proxy-server=http://{proxy}')
driver = webdriver.Chrome(options=chrome_options)

Don't let the website see your true colors

It's not enough to change the IP, you have to change the browser fingerprint as well. Some websites will leak the real IP via WebRTC, which is when thedual protection::

1. Disable WebRTC leakage

chrome_options.add_argument("--disable-blink-features=AutomationControlled")
chrome_options.add_experimental_option("excludeSwitches", ["enable-automation"])

2. Randomized user agents

A sense of rhythm in IP switching is important

Seen too many newbies make this mistake - either switching too hard and being treated like a bot, or switching too slowly and being banned. Suggestion based on the potholes I've traveled through:

• Ordinary website: change IP every 30-50 requests
• Critical site: change every 5-10 requests
• With ipipgo's intelligent switching mode, it can automatically adapt to the detection frequency of the target site

Help! What if I run out of IP pool?

There was a time when the IP pool suddenly bottomed out on a double eleven data grab. Later found out toHierarchical use of IP::

1. First round of probing with data center IP
2. Residential IP Processing Core Data Acquisition
3. Retain 5%'s mobile IP for unexpected situations

ipipgo's Hybrid Proxy Pool supports just this kind of strategy, automatically switching IP types for different scenarios, saving you a lot of heartache.

A practical guide to avoiding the pit

Recently helped a friend tune a crawler project, using these configurations to grab 500,000 data in three days:

 Proxy authentication is handled automatically
proxy_auth_plugin = create_proxy_extension(
    proxy_host="gateway.ipipgo.com",
    proxy_port=9021,
    proxy_user="Your account",
    proxy_pass="Dynamic Key"
)
chrome_options.add_extension(proxy_auth_plugin)

Frequently Asked Questions QA

Q: What should I do if the proxy often times out the connection?
A: Check if the session hold function is enabled, ipipgo background can set the long connection mode

Q: How do I verify if the agent is in effect?
A: Visit http://ip.ipipgo.com/checkip to see the currently used exit IPs

Q: What configuration is required for an enterprise level project?
A: Directly contact ipipgo customer service to open a dedicated agent, support 100+ concurrent switching per second!

These tricks are real money for lessons, especially with ipipgo's smart routing feature that automatically bypasses tagged IP segments. Recently they have a new browser fingerprinting protection package, ready to try the water next month, and then we will share with you the actual test results.