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Preview of Container Traffic Control

Container Traffic Control by kau.sh

A powerful but simple rule based system, that will allow you to control which (Firefox) container, a website will open up in.

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About this extension
Container Traffic Control makes Firefox's Multi-Account Containers even more powerful by automatically routing websites to the right container based on rules that you define.

Why Use Container Traffic Control?

There are various add-ons that attempt to control which websites open up in a container but it always felt (even with these add-ons), there was a level of control lacking, which would make you fight the container setup more than just use it smoothly.

I created this extension based on my own experience of using containers and various other add-ons. I came up with this mechanism of setting rules because it felt closest to how i wanted to leverage and use Containers.

How the Rules work
  1. We list out all the existing containers
  2. You start by marking the container as "open" or "restricted"
  3. You provide a url pattern (either a simple url or complex regex - we accept both)
    ... now just use Firefox normally and CTC will do its thing

To understand containers and this setup read my article.
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Permissions and dataLearn more

Required permissions:

  • Access browser tabs

Optional permissions:

  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
More information
Add-on Links
  • Homepage
  • Support site
Version
25.9.3
Size
730.12 KB
Last updated
a day ago (Sep 28, 2025)
Related Categories
  • Privacy & Security
  • Tabs
License
Apache License 2.0
Version History
  • See all versions
Tags
  • container
  • privacy
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Release notes for 25.9.3
  • made the ui for adding rules simpler
  • added more helpful instructions
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