Untrusted Container by Derek Rook
Manage an Untrusted container that blocks access to specified domains and private network addresses.
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
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.
More information
- Add-on Links
- Version
- 1.0.1
- Size
- 26.84 KB
- Last updated
- 3 days ago (Jan 17, 2026)
- Related Categories
- License
- Mozilla Public License 2.0
- Version History
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