« All posts

Understanding Linux Transparent Proxy Internals

Linux transparent proxying can be complex for engineers. This article explores its fundamentals and guides building a simple proxy server.

The transparent proxy functionality in the Linux kernel is often complex and poorly documented. This article explores how transparent proxies work and guides readers through building a simple transparent proxy server. Unlike traditional proxies, transparent proxies allow clients and servers to maintain their IP addresses, creating unique challenges that we will address in detail.