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Preview of Untrusted Container

Untrusted Container by Derek Rook

Manage an Untrusted container that blocks access to specified domains and private network addresses.

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Extension Metadata

About this extension
Untrusted Container Firefox Addon

Manage an Untrusted container that blocks access to specified domains and private network addresses (RFC 1918).

Features
  • Private Network Blocking: Automatically blocks access to 192.168.x.x, 10.x.x.x, etc., when browsing in the Untrusted container.
  • Custom Blocklist: Specify domains or IP ranges to be blocked within the Untrusted container.
  • Auto-Redirect: Configure specific domains to always open in the Untrusted container.
  • Security Focused: Prevents DNS rebinding and bypass attempts by checking resolved IP addresses.
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Permissions and data

Required permissions:

  • Access browser tabs
  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
Learn more
More information
Add-on Links
  • Homepage
  • Support site
Version
1.0.1
Size
26.84 KB
Last updated
3 days ago (Jan 17, 2026)
Related Categories
  • Privacy & Security
  • Tabs
License
Mozilla Public License 2.0
Version History
  • See all versions
Tags
  • anti tracker
  • container
  • content blocker
  • privacy
  • security
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