What is Proxy Chain?
A technique of routing traffic through multiple proxy servers in sequence, making it harder to trace the connection back to the original source.
Proxy chaining adds layers of indirection between you and your destination.
How It Works
- Traffic passes through Proxy A → Proxy B → Proxy C → Destination
- Each proxy only knows the previous and next hop
- No single proxy sees both the source and destination
Compared to Tor
- Tor is essentially an automated, encrypted proxy chain with 3 relays
- Manual proxy chains require you to trust each proxy operator
- Tor adds encryption at each layer; manual chains may not
Tools
- ProxyChains: Linux tool that forces any application through a chain of proxies
- Tor: The most robust proxy chain implementation
- VPN + Tor: Route through VPN first, then Tor for additional protection
Limitations
- Each hop adds latency
- If all proxies are operated by the same entity, chaining provides no benefit
- Timing correlation can potentially link entry and exit traffic
Related Terms
Proxy Server
An intermediary server that sits between your device and the internet, forwarding requests on your behalf. Proxies can provide privacy by hiding your IP address, but unlike VPNs, they typically don't encrypt traffic.
Tor Network
A free, open-source software and network that enables anonymous communication by directing Internet traffic through a worldwide volunteer overlay network of thousands of relays. Tor conceals users' locations and usage from surveillance and traffic analysis.
Virtual Private Network
A technology that creates a secure, encrypted connection over a less secure network, such as the public internet. VPNs mask your IP address, encrypt your internet traffic, and can make it appear as though you're browsing from a different location.
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