I have saved your comment and will try to implement them when setting it up. Thank you!

Have done something similar, you’ll discover the joy of have no internet while you do server maintenance, upgrades or disaster recovery and worst case, hardware failures.

I may purchase another lower powered device to prevent a single point of failure, but I want to get this thing working. Sorry, too excited with Proxmox now :D Also, in the worst case scenario, I’ll just use my current router while I manage my OPNsense

I would enable VLANs for network segments but if you either don’t have switches that support tags or are new to all of this it’s going to be WAY less headache to just use it all untagged for now. (Spend time on funner things, seriously!)

Setting up VLANs will be my next project :D . Right now, my goal is to get this thing working.

I have messed up my timings a bit, so the dual NIC card is on the way from Amazon. I’ll post my results up here once it arrives.

Thanks, i may go this route.

FYI, you might occasionally run into issues where the NIC “GUID” changes so your VM won’t be able to start.

I think this is the same issue as a Linux host forgetting where to mount a disk since the UUID was not written in fstab.

But why does the GUID change? Can’t it be hard-coded?

Want setting change that requires a reboot from proxmox would result in a total lots of the network

Did you mean a setting change in proxmox? If yes, then I understand the risks.

Also, after the reboot does the setup comeback online automatically? Or do you need to perform some manual intervention?

Are you hosting more VMs on Proxmox that need network via a virtual switch?

Only one more VM which will host some services (to be accessed via a reverse proxy)

Are you providing network to other physical devices as well via a switch, so you need to output to that?

The Proxmox is connected to a switch, and all my other devices (other servers/PC/access point) are connected to this switch. Ideally, these services will connect to the OPNsense VM and get IP via DHCP from OPNsense.

Do you want OPNsense to be your gateway and assign IPs, or do you have a router?

OPNsense should be my public facing gateway, similar to what my current router (TP-Link) is doing. Currently, my router is connected to an ISP GPON. But it seems the GPON acts only as a fiber to ethernet converter. I use my ISP provided credentials on my ROUTER to authenticate with my ISP (via PPPoE)

As you have 3 NICs and sound like you want to use them, let’s assume you aren’t doing RoaS, but this could all be done on one (very busy) NIC.

RoaS? Router as a Service? I have no idea. I want to the 3rd port, but if you feel like this is a bit complicated, I can leave it for now, provided I don’t incur a heavy penalty for using the LAN port for traffic and Proxmox management.

And … you can do this!

Thank you, I needed that! I am just starting out with Proxmox and OPNsense and it seems a bit overwhelming. I am trying to start out small. In case everything blows up, I still have my old TP-Link router.

PS: Please check the original post as I have added a diagram regarding what I want to do.