WeAreDevelopers Logo WeAreDevelopers
Sign in
For You LIVE
World Congress 2025 • Aug 20, 2025 • Session details

Docker network without Docker

Oliver Seitz

Mastering Linux kernel primitives gives you total control over container networks. Strip away the Docker daemon to manually route traffic, boost performance, and remap ports without restarts.

Pause
Mute Enter Fullscreen
#1 about 3 min

Fundamentals of container network isolation and system components

How Linux namespaces and control groups restrict process access before introducing network communication pathways.

#2 about 5 min

Connecting namespaces with local virtual ethernet pairs

Constructing direct network pathways between isolated Linux namespaces using virtual ethernet interfaces.

#3 about 5 min

Connecting multiple container namespaces using virtual network bridges

Implementing network bridges to efficiently switch traffic between multiple container virtual interfaces without direct point-to-point links.

#4 about 4 min

Managing container packet flow with Linux kernel iptables

How network address translation and routing rules determine packet destinations and control layer access.

#5 about 2 min

Bypassing the Docker userland proxy for kernel networking

Disabling the default userspace proxy process allows local network traffic to route purely through kernel level packet chains.

#6 about 3 min

Inspecting default bridge architectures and custom Docker networks

Demonstrating how tooling sets up distinct isolated bridge networks to prevent default container cross-communication.

#7 about 5 min

Dissecting iptables rules preventing internal inter-bridge communication

Analyzing the specific packet filtering policies implemented to drop traffic attempting to cross isolated bridge networks.

#8 about 6 min

Manual port forwarding configuration using network address translation

Configuring kernel destination NAT rules to manually forward host ports into a running container without external tooling.

Matching moments

1:02 min

Abstracting container communication utilizing robust overlay networks

Marc Nimmerrichter · World Congress 2022

1:59 min

Orchestrating with Kubernetes against Docker and accessing slides

Philipp Krenn · World Congress 2022

3:32 min

High-level infrastructure topologies and isolation boundaries

Ryan Niño Dizon · LIVE

3:17 min

Injecting network messages directly from compromised container environments

Reinhard Reinhard · World Congress 2024

3:12 min

Configuring Docker images, networking protocols, and persistent storage volumes

Francesco Ciulla Francesco Ciulla · World Congress 2024

2:20 min

Isolating pod communication with strict network policies

Rico Komenda Rico Komenda · World Congress 2025

More from World Congress 2025

GenAI Security: Navigating the Unseen Iceberg thumbnail
24:33
11 months ago

GenAI Security: Navigating the Unseen Iceberg

Maish Saidel-Keesing

Behind the Code: How Women Are Powering the Future of AI thumbnail
30:28
about 1 year ago

Behind the Code: How Women Are Powering the Future of AI

Alexandra Wudel, Laura Moritz, Madalina Florean

The AI Hype Filter: What’s Real, What’s Investable, What’s Noise? thumbnail
28:12
about 1 year ago

The AI Hype Filter: What’s Real, What’s Investable, What’s Noise?

Justus Lumpe, Konstantin Vinogradov, Nils Eiteneyer, Stephan Wirris

AI in Leadership: How Technology is Reshaping Executive Roles thumbnail
28:19
about 1 year ago

AI in Leadership: How Technology is Reshaping Executive Roles

Bernd Datler, Jasmin Kaiser, Jeff Hausmann, Sonja Alvarez

The AI-Ready Stack: Rethinking the Engineering Org of the Future thumbnail
28:09
about 1 year ago

The AI-Ready Stack: Rethinking the Engineering Org of the Future

Alex Laubscher, Jan Oberhauser, Keno Dreßel, Mirko Novakovic

AI Sovereignty: What Does It Take? thumbnail
29:13
about 1 year ago

AI Sovereignty: What Does It Take?

Boris Hecker, Clemens Wasner, Robin Hermann, Sonja Alvarez

Related videos

Docker exec without Docker thumbnail
29:16
World Congress 2024 • about 2 years ago

Docker exec without Docker

Oliver Seitz

Docker build without Docker thumbnail
28:40
World Congress 2026 Europe • 3 months ago

Docker build without Docker

Oliver Seitz

Turning Container security up to 11 with Capabilities thumbnail
28:47
World Congress 2023 • almost 3 years ago

Turning Container security up to 11 with Capabilities

Mathias Tausig

All things Docker Compose! thumbnail
28:30
World Congress 2023 • about 3 years ago

All things Docker Compose!

Michael Irwin

Small, Secure, Interconnected: The next Internet Protocol thumbnail
30:11
World Congress 2026 Europe • 3 months ago

Small, Secure, Interconnected: The next Internet Protocol

Ross Kukulinski

Local Development Techniques with Kubernetes thumbnail
40:00
World Congress 2021 • about 5 years ago

Local Development Techniques with Kubernetes

Rob Richardson

Related articles

From learning to earning

Jobs that call for the skills explored in this talk.