OPNsense is an open-source, FreeBSD-based firewall distro. It provides a modern GUI and numerous plugins. A great plus is its ease of use, in contrast to some other open-source firewalls in the past. Also, OPNsense is a fork of Pfsense (we wrote about Pfsense, so check out that blog post as well - the link is below).
Netflow configuration
OPNsense NetFlow configuration is straightforward, and all the configurations are placed on a single page. Just slide to the Reporting/Netflow page on the GUI, where you will find the following parameters that should be set:
Let's go through the fields together:
Upon setting all the mentioned options and pressing the Apply button, NetFlow packets should start flowing to your NetVizura server.
Eventlog configuration
When it comes to the EventLog configuration, it is also very simple. Go to the System->Settings->Logging/Targets and Add a new Destination, and the next page should appear:
We will cover the options here as well:
After one Save and Apply the messages will go from OPNsense to your NetVizura EventLog analyzer.
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