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138 lines
3.9 KiB
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138 lines
3.9 KiB
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================================
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Using Insight - Netflow Analyzer
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================================
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OPNsense is equipped with a flexible and fast Netflow Analyzer called Insight.
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To use Insight, one needs to configure the Netflow exporter for local capturing
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of Netflow data. To do so take a look at :doc:`netflow_exporter`.
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--------------
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User Interface
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--------------
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Insight is a fully integrated part of OPNsense. Its User Interface is simple yet
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powerful. It can be accessed via :menuselection:`Reporting --> Insight`.
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.. image:: images/insight_gui.png
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:width: 100%
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Insight offers a full set of analysis tools, ranging from a graphical overview to
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a csv exporter for further analysis with your favorite spreadsheet.
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---------------
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Graphs & Totals
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---------------
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The default view of Insight is the Top users and Graphical Overview.
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This view allows for quick examination of current and past flows, showing a graph
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for in and out going traffic for each configured interface.
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Select Range & Resolution
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-------------------------
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In the top right corner a selection can be made for the date range and accuracy
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(resolution) of the collected traffic flows.
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View Type
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---------
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One can show the traffic flows in a stacked manner (default), as a stream or expanded
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to compare usage with different interfaces.
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**Stacked**
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.. image:: images/stacked_view.png
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:width: 100%
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**Stream**
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.. image:: images/stream_view.png
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:width: 100%
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**Expanded**
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.. image:: images/expanded_view.png
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:width: 100%
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Interfaces
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----------
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Clicking on an interface disables or enables the graph view, double clicking select
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only that interface.
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Top Users
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------------
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The top 25 users are shown for a selected interface, both for ports and ips within
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the previously selected date range.
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Interface Top
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-------------
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Select the interface to see the top 25 users.
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Port Pie Chart
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---------------
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The port pie chart shows the percentage per port/application. One can change the
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view by clicking or double clicking on one of the shown port names/numbers.
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Clicking on a piece of the pie will open a detailed view for further analysis.
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.. image:: images/pie_piece.png
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:width: 100%
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.. image:: images/pie_details.png
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:width: 100%
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IP Addresses Pie Chart
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----------------------
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The IP addresses pie chart works the same as the ports pie chart and shows the
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percentage per IP number. One can change the view by clicking or double clicking
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on one of the shown IP numbers.
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Clicking on a piece of the pie will open a detailed view for further analysis.
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Interface Totals
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----------------
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Not shown in the screenshot but latest version also includes a Total for the
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selected interface, shown are Packets (In, Out, Total) and Bytes (In, Out, Total).
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------------
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Details View
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------------
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One can open the details view by clicking on one of the pieces of a pie chart or
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click on the tab **Details**.
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When opening the details view by clicking on the tab one can make a new query.
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.. image:: images/insight_details_view.png
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:width: 100%
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After selecting a valid date range (form/to) and interface one can further limit
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the output by filtering on port or IP address. Select the refresh icon to update
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the detailed output. Leave Port and Address empty for a full detailed listing.
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.. image:: images/insight_full_details.png
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:width: 100%
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-----------
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Export View
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The **Export** view allows you to export the data for further analysis in your favorite
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spreadsheet or other data analysis application.
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.. image:: images/insight_export_view.png
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:width: 100%
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To export data, select a **Collection** :
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* FlowSourceAddrTotals - Totals per source address
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* FlowInterfaceTotals - Totals per interface
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* FlowDstPortTotals - Totals per destination port
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* FlowSourceAddrDetails - Full details per source address
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Select the **Resolution** in seconds (300,3600,86400)
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Then select a date range (from/to) and click the **export** button.
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.. image:: images/insight_export.png
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:width: 100%
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