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74 lines
2.8 KiB
ReStructuredText
74 lines
2.8 KiB
ReStructuredText
==================================================
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Setup Anti Virus Protection using OPNsense Plugins
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==================================================
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OPNsense can offer HTTP and HTTPS protection by utilizing its highly flexible
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proxy and the industry standard ICAP. An external engine from one of the known
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vendors is used to offer maximum protection against malware, such as ransomware,
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trojans and viruses. This protection can be further enhanced by the built-in Intrusion
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Prevention System and Category Based Web filtering.
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This How To will use the Plugins C-ICAP and ClamAV.
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.. Note::
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The Anti Virus Engine can protect you against malicious websites and infected
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file downloads, it does not protect the local clients. Therefore it is always
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a good idea to install a client based solution as well to protect against other
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forms of infection such as through emails or usb stick if they are not analyzed
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as well.
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.. Note::
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Note that there is still another attack vector called social engineering.
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Most attacks would fail without the help of an internal human whose trust
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is exploited. An active scanner is only a part of the security concept.
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Step 1 - Setup the Proxy
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------------------------
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Start with setting up the proxy with its basic configuration, see :doc:`cachingproxy`.
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Step 2 - Setup Transparent Mode
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-------------------------------
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To setup the transparent mode, see: :doc:`proxytransparent`.
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Step 3 - Install and Configure the ClamAV and the C-ICAP plugins
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----------------------------------------------------------------
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.. Note::
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The defaults from c-icap and ClamAV (vendor defaults) are used.
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Please keep in mind that changing may affect security or performance.
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If you don't know how a setting is affecting your network,
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you should keep it at the default.
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- :doc:`clamav`
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- :doc:`c-icap`
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Step 4 - Configure ICAP
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-----------------------
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To configure ICAP go to :menuselection:`Services --> Proxy --> Administration` and select **ICAP Settings**
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for the **Forward Proxy** tab.
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Select enable ICAP and filling the Request and Response URLs.
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For the C-ICAP plugin, the default URLs will be:
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======================== =========================
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**Request Modify URL** icap://[::1]:1344/avscan
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**Response Modify URL** icap://[::1]:1344/avscan
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======================== =========================
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Now click on **Apply**
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Step 5 - Test using EICAR
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-------------------------
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To test if the engine is operational and functional go to http://www.eicar.org/?page_id=3950
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on this page you will find several files you can test.
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First test the HTTP protocol version. If that works, test the HTTPS version if you
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have also configured the transparent SSL proxy mode.
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.. Warning::
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**IMPORTANT NOTE** :
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YOU DOWNLOAD THESE FILES AT YOUR OWN RISK!
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**DONE**
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