Proxmox VLAN Trouble

Sandman01086

New Member
Oct 15, 2025
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Hi all, would like to start this post off by saying I'm brand new to the world of Proxmox and Linux, so please excuse any ridiculous questions on my part :)

This is in my lab environment at home and my intention is to set up VLANs to secure traffic that is incoming from the internet and separate it away from the internal services that I'm hosting (AD, DNS, etc). So I have two VLANs I'm looking at right now:

VLAN 50 (External)
VLAN 60 (Internal)

My Proxmox host has a two NIC bond plugged into ports 21,22 of my DLink managed switch. Ports 21, 22 are tagged on all VLANs. Switch port 24 is the uplink to my PF Sense firewall, again tagged on all VLANs.


The PFSense firewall is a DHCP server for each VLAN (and all tagged on the LAN port).

The issue I'm seeing is that I can't ping between VMs on the same network in Proxmox, or to my PFSense firewall. (For this phase of testing, windows firewall is disabled). Interestingly enough, my firewall and switch do have the MAC addresses of my VMs in their MAC table.

My two VM NICs within Proxmox:

1760545531880.png
1760545545382.png

Proxmox host network:

1760545623610.png

If someone could please point out what I'm doing wrong it would be greatly appreciated! Also, if any more settings/logs would be helpful let me know (although you may have to explain how to gather them too).

Thanks
 
So the issue is you cannot ping between the two VMs that you posted the network device configuration of?
How does the network configuration of the VMs look like? Do they have a firewall enabled?