Curl Emulates Browser Fingerprinting: Advanced Anti-Detection

Hands on with curl disguised as a real life browser

Recently, a lot of friends who do data collection have been asking why they are still recognized by websites even though they have used proxy IPs. This thing is like you go to the masquerade, although wearing a mask but walking posture will still be recognized by acquaintances. Today we will talk about how to curl this "data collection tool" to do a full set of camouflage, focusing on how to combine ipipgo proxy service so that the site can not recognize you.

What the hell is a browser fingerprint?

Simply put, the website recognizes whether you are a bot or not by 20+ features, commonly:

Three main features that must be looked at:

1. User-Agent (like your hairstyle)
2. request header information (similar to dressing style)
3. IP Address Characteristics (like walking posture)

A lot of newbies think that just get a proxy IP on the end of the matter, in fact, like only changed clothes did not change shoes, the site can still catch you. We have to use ipipgo's dynamic residential proxy, with the following tricks to really stealth.

Curl camouflage four-piece configuration

Here is a real case configuration (last year to help an e-commerce customer to get the program):

curl -L
-H "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36"
-H "Accept-Language: zh-CN,zh;q=0.9"
-H "Sec-Fetch-Mode: navigate"
--proxy http://user:pass@gateway.ipipgo.io:9021
https://target-site.com

watch carefully-proxyParameters here use ipipgo's proxy channel, they have more than 30 million residential IPs in their proxy pool, which is much more reliable than ordinary server room IPs.

List of request headers that must be set

Here's a pitfall to watch out for:Don't use a randomizer.! Many sites test individual request headers for self-contradiction. We recommend using the browser fingerprinting library provided by ipipgo, which automatically matches real device characteristics.

The Advanced Play of Proxy IP

The difference between a regular agent and a premium agent is like a public phone and a private line:

Ordinary proxy:
- IP survival time <5 minutes
- Request delay＞2 seconds
- Success rate＜60%

ipipgo proxy:
- Session hold 30 minutes +.
- Average response 800ms
- Success rate 97%+

In particular.IP Rotation Strategy: It is recommended to change the IP every 50 requests while keeping the User-Agent the same. This is not easy to trigger the wind control, but also can maintain the session continuity.

Frequently Asked Questions

Q: What if I still get blocked after using these methods?
A: First check the IP quality, many free proxy IP early into the blacklist. It is recommended to change ipipgo's exclusive proxy package, each IP is a clean address for the first time.

Q: Do I need to maintain my own IP pool?
A: No need at all! ipipgo's backend will automatically filter invalid IPs, and can also automatically match the best export node according to the target website.

Q: How to control the acquisition frequency?
A: Remember the mnemonic:"Randomized intervals + time-phased operations". It's best to add a random wait of 0.5-3 seconds between requests, with appropriate speedups during early morning hours.

Finally, we remind you that the technical means can not be separated from the reliable proxy service. Like our team is now using ipipgo enterprise edition, comes with request header automatic camouflage function, than manual configuration is much more worrying. In particular, theirIntelligent Routing SystemThe ability to automatically avoid blocked IP segments is a feature that really cuts a lot of hair.