
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.
You'll need Firefox to use this extension
Extension Metadata
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
To understand containers and this setup read my article.
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
- We list out all the existing containers
- You start by marking the container as "open" or "restricted"
- 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
- Version
- 25.9.3
- Size
- 730.12 KB
- Last updated
- a day ago (Sep 28, 2025)
- Related Categories
- License
- Apache License 2.0
- Version History
- Add to collection
Release notes for 25.9.3
- made the ui for adding rules simpler
- added more helpful instructions
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