Proxychains-ng is a utility for POSIX-compliant systems that redirects network traffic and domain name lookups through proxy chains. It functions by intercepting system calls and forcing outgoing TCP connections through a sequence of SOCKS4, SOCKS5, or HTTP proxies without requiring modifications to the target application source code.
The tool distinguishes itself by utilizing dynamic library preloading to override standard network functions, allowing it to wrap socket-level traffic and route it through multiple intermediate servers. It supports various routing strategies, including strict, random, and dynamic paths, and automatically manages connection reliability by excluding unresponsive servers from the chain.
Beyond basic traffic redirection, the software provides integrated DNS resolution through the proxy tunnel. This capability prevents local network information leakage by ensuring that domain name lookups are performed through the established proxy connection rather than the local network.
