> Markdown version of [/events/world-congress-2025/sessions/636-docker-network](https://www.wearedevelopers.com/events/world-congress-2025/sessions/636-docker-network). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md).

---

# Docker network without Docker


- **Date:** Thursday, Jul 10, 2025
- **Time:** 15:30–16:00 (30 min)
- **Room:** Stage 1
- **Event:** World Congress 2025
- **Tags:** cloud, devops, docker

## Recording

[Watch recording](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker)

## Description

Ever forgotten to add a port forwarding rule in Docker? Annoying to restart the container, right? But how does port forwarding between a container and a host even work? What about container-to-container communication, and what exactly are virtual Ethernet bridges? Wait, how do cgroups and namespaces relate to all this?

Let’s continue my "Docker * without Docker" series and dive into the depths of Docker networking - without worrying too much about Docker itself. What does Linux offer? How can we build something like this from scratch? Maybe even directly in the terminal?

Join me for a hands-on exploration of the fundamentals and exciting details behind container networking!

## Speaker

### [Oliver Seitz](https://www.wearedevelopers.com/@oliver-seitz)

Oliver Seitz. Associate Manager at Accenture


## Related talks at this congress

- [Bootable AI Containers with Podman Desktop](https://www.wearedevelopers.com/events/world-congress-2025/sessions/537-bootable-ai) — Cedric Clyburn, Kevin Dubois
- [Building Agentic Apps with Docker](https://www.wearedevelopers.com/events/world-congress-2025/sessions/511-building-agentic) — Michael Irwin
- [Docker Deep Dive with a Docker Captain](https://www.wearedevelopers.com/events/world-congress-2025/sessions/484-docker-deep-dive) — Mohammad-Ali A'râbi
- [What's (new) with Spring Boot and Containers?](https://www.wearedevelopers.com/events/world-congress-2025/sessions/883-what-s-new-with) — Eva Panadero, maeddes