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Proxy and VPN Detection

7 min read Advanced Topics

Detecting proxy and VPN usage helps identify potentially evasive traffic, though legitimate privacy uses must be considered.

Why Detect Proxies?

Attackers use proxies to hide origins, bypass geographic restrictions, and evade IP-based security controls.

Detection Methods

  • IP Database Lookups - Check against known proxy/VPN IP lists.
  • Header Analysis - Identify proxy-related HTTP headers.
  • Behavioral Signals - Detect proxy-like connection patterns.

Fraudcache Detection

Fraudcache identifies known proxy and VPN IPs, helping you make informed access decisions.

Check for Proxies

Look up any IP for proxy indicators.

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