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{{Title|title=
onion-grater: a Tor Control Port Filter Proxy
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|description=Information about onion-grater.
|image=Oniongrater123123.jpg
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* [[onion-grater|onion-grater - User Documentation]]
* [[Dev/onion-grater|onion-grater - Developer Documentation]]
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{{intro|
Information about onion-grater.
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= Introduction =

onion-grater is a filter proxy that denies every controller command by default and allow specific commands, arguments and events that are explicitly whitelisted. It is a Tails project forked by {{project_name_long}} with some adaptations.

Acts as a proxy between the client application and Tor:

* Filters out Tor control protocol commands that are dangerous for anonymity such as <code>GETINFO ADDRESS</code> using a whitelist. 
* Allows using Tor Browser's New Identity feature on Anonymity Distribution Workstations.
* Fixes Tor Browser's about:tor default homepage and Tor Button status indicator without exposing commands that are dangerous for anonymity.

= onion-grater Warning =
The following onion-grater warning is shown for all applications that require it.

{{onion-grater-warning}}

= Applications that require onion-grater =
A list of applications which currently require onion-grater so these can be used in {{project_name_short}} can be found here: [[Special:WhatLinksHere/Template:Control_Port_Filter_Python_Profile_Add]]

= Add Profile =
{{Control_Port_Filter_Python_Profile_Add
|filename_new=40_onion_authentication
}}

= Remove Profile =
{{Control_Port_Filter_Python_Profile_Remove
|filename_new=40_onion_authentication
}}

= List Profile =
{{Control_Port_Filter_Python_Profile_List
}}

= See Also =
* [[Dev/onion-grater|onion-grater, a Tor Control Port Filter Proxy, design documentation]]

= Footnotes =
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[[Category:Documentation]]