---
type: concept
title: Transparent Proxy
tags: [networking, apt, configuration]
related: [apt-proxy]
created: 2026-06-30
updated: 2026-06-30
sources: ["output/rz_uni_greifswald_de_dienste_allgemein_sonstiges_update_service_debian_apt_proxy.md"]
---
# Transparent Proxy

In the context of the URZ [[apt-proxy]] service, a **transparent proxy** refers to a configuration method that allows the system to route requests through a proxy server without requiring modifications to the primary configuration files of the application—specifically the `sources.list` file in Debian-based systems.

Instead of changing the URLs of the package repositories, the proxy is defined in a separate configuration file (e.g., in `/etc/apt/apt.conf.d/`), which instructs the package manager to use the proxy for all HTTP requests.
