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Firefox: Block sites outside Firefox containers extensions

Block sites outside container is a brand new extension for the Firefox internet browser that reach the container performance of the browser.

Containers, first introduced as a Test Pilot experiment for Firefox and afterward launched as the Firefox Multi-Account Containers extension, permit customers to separate sites and native date from one another. Useful functions embrace utilizing Containers to sign-in to a number of accounts, e.g. Gmail, Twitter, or Facebook, directly, or to restrict monitoring.

Another factor that makes the container performance nice in Firefox is that extension builders might enhance it. We reviewed a number of extensions designed to enhance Container performance previously: Temporary Containers, Facebook Containers, Containers with Transitions, or Taborama are just some of the extensions that achieve this.

Note that you do not want the Multi-Account Containers extension to make use of Block sites outside container. You can’t create or handle containers utilizing it although.

Block sites outside container

Block sites outside container introduces two new options to containers in Firefox.

  1. Block any web site from loading outside their designated container(s).
  2. Allow sites to run in a number of containers.

The second use case is defined simply. You can pressure sites to open in particular containers utilizing the Firefox Multi-Account Container extension. What you can’t do utilizing it’s specify that you really want sites to run in a number of containers solely.

Block sites outside container modifications that as it’s possible you’ll arrange guidelines to permit sites to run in a number of containers solely.

The blocking possibility prevents sites from loading outside their designated container(s). Means: any try to load embedded content material, say a YouTube video, Twitter or Facebook buttons, or different embedded content material, fails.

The extension shows an error web page once you try to load a web site that has been blocked in a selected container.

site blocked

You might load it in a special container you probably have arrange a rule that permits the positioning to load in a special container. Other choices on the web page embrace disabling your complete rule set, or to allow the present container within the rule set.

Embedded content material is blocked mechanically.


block container addon rules

Configuration is simple however sadly a bit clunky. Open the Firefox Add-ons Manager and choose the Block sites outside container extension.

Select new rule to create the primary rule. Rules use a mixture of domains and containers they’re allowed to run in. Add a website per line and choose the containers you need the area(s) to run in afterward.

A purple border implies that the sites aren’t allowed to run in that container; that is the default setting. You have to specify not less than one container for the extension to work, except you need to stop a web site from working in any container or outside of it.

Repeat the method so as to add new rule units to the extension. You will discover that every is appended to the underside of the web page; manageability shouldn’t be nice when you arrange a variety of guidelines however it’s possible you’ll use the on-page discover possibility of the browser to leap to particular guidelines rapidly.

Another problem that you could be run into within the present model is that the container itemizing will get truncated if the container rely reaches sure thresholds.

Rule units could be deleted or set to inactive at any time within the guidelines.

Closing Words

Block sites outside container is a helpful extension for Firefox customers who use Containers within the browser or didn’t use them due to lacking performance that the extension provides.

Setup is a bit difficult due to how guidelines are displayed and managed, however it’s possible that the developer will deal with these points in future variations.

Now You: Do you utilize Containers?

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