0xCDE

@Chewt found the issue in the end... i had two interfaces share the same IP and was creating a conflict on the linux hosts. I dont know why Windows was not affected by it but all good in the end

@homelab

solved: There was an arp conflict, I had two interfaces sharing the same IP address, one from proxmox and one from pfsense. Once I changed the IP address from the proxmox interface everything worked!

Thanks everyone for helping!

@Gobo yes the gateway is configured properly. If ti wasnt the system would not have internet after a firewall refresh

@Gobo gw? I have tried with and without dhcp and the issue persists

@Chewt
yes they can still ping my firewall while not connected to the internet.
Here are two screenshots from one of the ubuntu vms on the home network and one from the kali vm on the infra network

@Chewt
The node has others vms as well, some of them are windows vms but they are not discussed as they do not face any problems connecting to the internet no matter what interface they are connected on. The Linux VMs that are on the WAN network which is the one that has the linux bridge that is connected to a port and those systems do not have any connectivity issues.

The other two lans also have a linux bridge that is not bound to any port and the Linux systems need the interface refresh in order to access the internet. Windows systems on those networks are connected to the internet with no issues.

yes the pfsense hardware is as you describe it. (picture attached)

For the last paragraph, I need to have some devices that will be isolated from my WAN (home network) because I want to create a cybersecuirty lab and I do not want anything to "escape" to my home devices.

Plus this teaches me how to manage a network with proper segmentation etc.

@Chewt

1. pfsense is virtualized on a Proxmox VM
2. If i bring down the network interface and back up it loses connectivity once more
3. The firewall is for and internal network so the WAN is my home network. I have an ubuntu server acting as a NAS and another ubuntu server for Jellyfin. Both servers are on the same proxmox instance, just on the WAN interfaces on the pfSense so I can access them from all the computers on the local network.