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				@@ -1,14 +1,22 @@ 
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				+ 
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				+.. _searx_filtron: 
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				+ 
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				 ========================== 
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				 How to protect an instance 
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				 ========================== 
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				+.. sidebar:: further reading 
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				+ 
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				+   - :ref:`filtron.sh` 
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				+ 
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				 .. _filtron: https://github.com/asciimoo/filtron 
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				 Searx depens on external search services.  To avoid the abuse of these services 
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				 it is advised to limit the number of requests processed by searx. 
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				 An application firewall, filtron_ solves exactly this problem.  Filtron is just 
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				-a middleware between your web server (nginx, apache, ...) and searx. 
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				+a middleware between your web server (nginx, apache, ...) and searx, we describe 
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				+such infratructures in chapter: :ref:`architecture`. 
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				 filtron & go 
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				@@ -17,32 +25,10 @@ filtron & go 
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				 .. _Go: https://golang.org/ 
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				 .. _filtron README: https://github.com/asciimoo/filtron/blob/master/README.md 
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				- 
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				-.. sidebar:: init system 
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				- 
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				-   ATM the ``filtron.sh`` supports only systemd init process used by debian, 
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				-   ubuntu and many other dists.  If you have a working init.d file to start/stop 
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				-   filtron service, please contribute. 
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				- 
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				 Filtron needs Go_ installed.  If Go_ is preinstalled, filtron_ is simply 
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				 installed by ``go get`` package management (see `filtron README`_).  If you use 
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				-filtron as middleware, a more isolated setup is recommended. 
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				- 
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				-#. Create a separated user account (``filtron``). 
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				-#. Download and install Go_ binary in users $HOME (``~filtron``). 
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				-#. Install filtron with the package management of Go_ (``go get -v -u 
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				-   github.com/asciimoo/filtron``) 
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				-#. Setup a proper rule configuration :origin:`[ref] 
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				-   <utils/templates/etc/filtron/rules.json>` (``/etc/filtron/rules.json``). 
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				-#. Setup a systemd service unit :origin:`[ref] 
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				-   <utils/templates/lib/systemd/system/filtron.service>` 
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				-   (``/lib/systemd/system/filtron.service``). 
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				- 
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				-To simplify such a installation and the maintenance of; use our script 
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				-``utils/filtron.sh``: 
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				- 
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				-.. program-output:: ../utils/filtron.sh --help 
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				-   :ellipsis: 0,5 
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				+filtron as middleware, a more isolated setup is recommended.  To simplify such 
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				+an installation and the maintenance of, use our script :ref:`filtron.sh`. 
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				 Sample configuration of filtron 
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