Suggest an editImprove this articleRefine the answer for “What is the none network?”. Your changes go to moderation before they’re published.Approval requiredContentWhat you’re changing🇺🇸EN🇺🇦UAPreviewTitle (EN)Short answer (EN)**`none`** is a Docker network type in which a container starts up **completely without a network**. **Key point:** the `none` network is a mode of complete network isolation; the container lives separately, with no access to other services and the internet, which improves security and gives full control over the network if it will be configured manually.Shown above the full answer for quick recall.Answer (EN)Image`none` is a Docker network type in which a container starts up **completely without a network**. It gets its own network namespace, but that namespace has *no interfaces, no routes, and no internet access*, except for `lo` ([localhost](http://localhost) inside the container). ### **What this means** - the container cannot connect to other containers; - the container is not accessible from outside; - there is no DNS, no internet access, and no connection to the host. Essentially, this is a "container in a vacuum". ### **When this is used** - for tasks that need extra isolation (for example, running untrusted code); - for security tests; - for containers that should not have a network by definition; - for manual network setup: first `none`, then custom iptables/bridge rules. ### **Example run** ```bash docker run --network none alpine ``` ### **Summary** The `none` network is a mode of *complete network isolation*. The container lives separately, with no access to other services and the internet, which improves security and gives full control over the network if it will be configured manually.For the reviewerNote to the moderator (optional)Visible only to the moderator. Helps review go faster.