Troubleshooting common problems in the network using Netflow and graphs

The available OPNsense reporting tools can help us solve some problems related to performance. Based on my experience, I will give some examples of when these reporting tools can help a lot while solving issues:

• Network Connectivity Issues: Sometimes, you can face connectivity issues related to packet loss, latency, or both. When this kind of issue occurs – commonly on WAN interfaces, depending on the number of services enabled on OPNsense, such as VPN and Proxy, to name a few – you will receive a lot of complaints. A good starting point is checking the WAN links and quality graphs, as these are helpful resources. Even if you watch the gateway's status closely while running pings and other known network tools, the traffic and quality graphs will show a historical view of this data, which gives you a better analytical point of view.
• Slow System/System Crashes: When the whole system...