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English Forums => Tutorials and FAQs => Topic started by: yousdeiry on December 22, 2025, 11:41:00 AM

Title: OpnSense internet access under virtualisation (Proxmox)
Post by: yousdeiry on December 22, 2025, 11:41:00 AM
I'm having trouble getting internet access on my OPNsense VM hosted on Proxmox. I have limited access to the host, so I configured the WAN interface with a Static IP, Gateway, and DNS (I cannot activate DHCP). I also added a rule to allow all traffic on the WAN interface.

Currently, I can ping other VMs on the same WAN network (they have internet access), andI can ping the Gateway itself, but I have no internet connectivity (i can't ping 8.8.8.8 or 1.1.1.1).

Does anyone have a hint on how to resolve this?
Title: Re: OpnSense internet access under virtualisation (Proxmox)
Post by: Seimus on December 22, 2025, 01:16:10 PM
Quote(I cannot activate DHCP)

Why? :)
Is this just for testing?

QuoteCurrently, I can ping other VMs on the same WAN network (they have internet access), andI can ping the Gateway itself, but I have no internet connectivity (i can't ping 8.8.8.8 or 1.1.1.1).

So you ping from the OPN directly?
Assuming the WAN has assigned a Private IP, you can only ping devices from the same subnet as is the WAN on OPN?
Do you have a default route set pointing to WAN?

Regards,
S.
Title: Re: OpnSense internet access under virtualisation (Proxmox)
Post by: Patrick M. Hausen on December 22, 2025, 01:22:03 PM
Is this a hosted environment? Is the OPNsense VM permitted to use a different MAC address than the host on WAN?