Anonymous Proxy Detection: 3 Ways to Recognize IP Anonymity Levels

A wild card play on anonymous proxy detection

Brothers engaged in website operation understand that some scenes must confirm that the proxy IP is not really stealth. For example, to do data collection for fear of being ban, or to engage in account risk control to prevent peer. Here are three grounded detection methods, with our ipipgo proxy service as an example.

See if the protocol fingerprints are leaking.

There's a fatal difference between proxy servers and regular broadband - theUnderlying protocols can be exposed. For example, the TCP timestamp of ordinary home broadband is a fixed interval, and the server room servers often turn off this function in order to save resources. Tried with ipipgo's detection interface, the protocol fingerprint of their high stash of IP pools and home broadband similarity can be up to 92%, which is a big step higher than other homes on the market.

Checking IP-associated dark pile data

Many proxy IPs are planted on correlation data, for example:

1. Multiple accounts logged in at the same time
2. Access routes are not customized for real people
3. Abrupt geographic switching

ipipgo's dynamic switching function is good, their residential agent every 15 minutes automatically change IP, but also can simulate the mouse track. The last test with their agent registered 50 accounts, the system froze and did not find abnormalities.

Reverse Probe Proxy Server

This play is a bit technical, but it's incredibly effective. It is done by sending a protocol-specific request to the target IP:

- Sending an HTTP request but deliberately not completing the handshake
- Accessing SSH services on non-standard ports
- Send malformed ICMP packets

Normal proxy servers respond immediately, while real broadband simply ignores such antics. ipipgo's defenses do this very well, as their transit nodes mimic the "play dead" response of real devices, leaving the detectors in a state of complete bewilderment.

Frequently Asked Questions QA

Q: Why is the test always wrong with some proxies?
A: Many service providers use a blacklist library that is not updated for half a year, it is recommended to use ipipgo's detection interface directly, they synchronize the latest fingerprint library every 2 hours

Q: What level of agent is needed to do cross-border e-commerce?
A: At least use the high stash type, don't be greedy and buy a transparent agent. ipipgo's cross-border e-commerce special package with automatic environmental isolation is more cost-effective than buying an agent separately.

Q: What happens when a proxy IP is detected?
A: The light is to restrict access, the heavy is blocked. Previously, there is a crawler customer changed ipipgo rotation agent, the collection success rate from 37% soared to 89%

Lastly, a reminder to newbies: don't believe in the 100% anonymity propaganda, the key to look at the service provider's technology iteration speed. ipipgo has just recently upgraded its protocol obfuscation engine, and it really does have a pair of brushes in the area of anti-detection. In particular, their enterprise version of the package, support for custom protocol fingerprinting, suitable for anonymity requirements of high scenarios.