How did you monitor your vlans with suricata?
At present I only monitor the VLAN serving the ‘computer room’ which includes the servers. It’s where all the ‘stuff’ happens so I figured I’d start with the most important. However I am in the process of learning how to SPAN (Switch Port Mirroring) where you configure your managed switch to copy traffic from specific VLAN port or all VLANs ports to a dedicated ‘monitoring port’ where a micro server is running Suricata. The mirrored traffic will retain their VLAN tags and Suricata can parse these tags.
Those are the lofty plans. LOL I’m still fiddling around with it and Suricata because you have to actually set Suricata up to be able to do that. It doesn’t right out of the box.




It is possible to offload the correlation to a downstream SIEM or log aggregator like Wazuh or ELK. Again, it’s something I’m currently trying to spool up on. I know it can be done, I’m just trying different things until I do get it right. I appreciate any input.