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OpnSense on Proxmox vs bare metal install? (alien.top)

submitted 11 months ago by androidusr@alien.top to c/homelab@selfhosted.forum

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I'm going to set out on installing OpnSense for the first time. I see some people put OpnSense on Proxmox and pass through a pcie network card. Besides the power of backing up and restoring, are there other advantages to this?

My planned OpnSense box is an old Dell Optiplex. It has the normal ethernet port on the motherboard as well as a 4-port PCIe network card that I added. So I'd probably use the PCIe network ports for OpenSense, and reserve the onboard ethernet port for troubleshooting if I royally mess up.

I'm still a proxmox newbie, but I think I can manage the PCIe passthrough. I'm just not sure what other complications that will introduce to my OpnSense and networking learning curve. So I thought I'd ask first and see if some of the disadvantages or advantages would push me one way or the other. I'm afraid of locking myself out of OpnSense because of incorrectly configured networking as I'm learning.

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[–] Not_your_guy_buddy42@alien.top 1 points 11 months ago

So, I run OPNsense in a VM on Proxmox. There is only one drawback I am aware of, which is when I update the Proxmox host itself, I'll need to attach a monitor/keyboard/mouse to it. Theoretically, if the upgrade was fully automatic and never needing any intervention or user input, it'd be possible without: But the reality is more that it might need user input, but the OPNsense VM will not be booted i.e. network will be down i.e. I need direct access to the Proxmox host.