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Allows the user to provide a
frameAncestors
option to the engine, which follows the Content Security Policy format. An equivalent environment variable has also been created.Examples
Only allow us to put our pages in frames:
FRAME_ANCESTORS="'self'"
Note: Pay attention to the single quotes!
Also allow example.com and its subdomains:
FRAME_ANCESTORS="'self',*example.com"
Allow all frames (not advised):
FRAME_ANCESTORS="*"
To disallow frames (default):
FRAME_ANCESTORS="'none'"
We disallow frames by default in order to prevent click jacking.
Partially addresses: #950