We can quickly forge a non-comprehensive inspect-net-stack.sh script: #!/usr/bin/env bashīefore running it, let's taint the iptables rules a bit to make them recognizable: $ sudo iptables -N ROOT_NSĪfter that, execution of the inspect script on my machine produces the following output: $ sudo. And not to forget, the set of netfilter hooks, including defined by iptables rules. What else? Probably, the set of routing rules. What constitutes a Linux network stack? Well, obviously, the set of network devices. Isolating containers with network namespaces Instead, we'll focus on the basic concepts and use the bare minimum tooling to achieve our learning goals. Linux localhost.localdomain 4.18.0-147.3.1.el8_1.x86_64įor the sake of simplicity of the examples, in this article, we are not going to rely on any fully-fledged containerization solution (e.g. All the examples in the article have been made on a fresh vagrant CentOS 8 virtual machine: $ vagrant init centos/8 Go check it out! PrerequisitesĪny decent Linux distribution would probably suffice.
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DOCKER NETWORK ISOLATION FULL
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