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Passive OS Fingerprint Masking (TCP/IP Fingerprint)

Understanding OS Fingerprinting​

Operating systems can be identified through analysis of network traffic patterns. Each OS implements the TCP/IP stack differently, creating a unique "fingerprint" in network packages. This fingerprint-based identification method is called passive OS fingerprinting because it doesn't require sending active requests.

Testing Your TCP/IP Fingerprint​

You can check your device's TCP/IP fingerprint by:

  1. Visit BrowserLeaks
  2. Scroll to the "TCP/IP Fingerprint" section
  3. Analyze the detected operating system

Common Scenarios​

Expected Results​

ScenarioTypical ResultExplanation
Using a ProxyDifferent OS than actualProxy servers repack network packages
Running on VMOriginal OS detectedVM networking may expose host OS
Important Note

TCP/IP fingerprint is a connection-level characteristic that Indigo cannot modify directly. Many websites don't heavily weight this parameter in their detection systems due to common legitimate mismatches.

Why Mismatches Are Normal​

Several factors can cause TCP/IP fingerprint mismatches:

  • Network devices
  • Proxy services
  • VPN configurations
  • Corporate networks
  • Cloud services
tip

Mismatches between TCP/IP Fingerprint and actual OS are common in normal internet traffic and usually don't indicate suspicious activity.

Masking Solutions​

While Indigo cannot directly modify TCP/IP fingerprints, you have several options:

The most effective way to mask your TCP/IP fingerprint is using specialized proxy services that offer fingerprint masking capabilities, for example, iproxy.online