How to configure vlans with 1 NIC and no switch/firewall

thegreekman

New Member
Jul 3, 2023
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Hello, I have proxmox setup with 1 NIC attached to the server. My goal is to be able to route to the 192.168.1.0/24 on multiple vlans that I create so I can give them internet access. Right now I only have 1 vlan setup for testing, vlan 10. I can ping the VM on vlan 10 from the 192.168.1.0/24 subnet, but I can't ping the 192.168.1.0/24 subnet from the VM. I am thinking its a routing issue, but I'm not sure where to add the route. I understand I can use a switch or pfSense, but im wondering if this is possible without the 2 right now. In the future I will incorporate pfSense. Thanks in advance
I am just getting into networking so most of this is new to me.

This is the VM network config

network:
ethernets:
ens18:
addresses:
- 10.0.0.3/24
gateway4: 10.0.0.1
nameservers:
addresses:
- 8.8.8.8
routes:
- to: 192.168.1.0/24
via: 10.0.0.1
version: 2

This is the Proxmox network config


auto lo
iface lo inet loopback

iface enp8s0 inet manual

auto vmbr0
iface vmbr0 inet static
address 192.168.1.100/24
gateway 192.168.1.1
bridge-ports enp8s0
bridge-stp off
bridge-fd 0
bridge-vlan-aware yes
bridge-vids 2-4094

iface wlp6s0 inet manual

auto vmbr0.10
iface vmbr0.10 inet static
address 10.0.0.1/24
 
If you want to route between two different subnets you need something that can act as a router. By default IPv4 Forwarding is disabled in the PVE hosts sysctl.conf.
 
If you want to route between two different subnets you need something that can act as a router. By default IPv4 Forwarding is disabled in the PVE hosts sysctl.conf.
OK so i would need to incorporate pfSense then. Thanks
 

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