What is the best way to provide internet access to guests on a Proxmox VXLAN? Is it:
- One node (host) in the cluster is the default gateway, all traffic is routed through it. Sounds clean and simple but there’s multiple layers of jank to get it working, if it works at all
- Have a guest (lxc or VM) on the VXLAN act as a gateway. Give it two NICs - one on the vnet and another on the hosts bridge (physical lan), route traffic through the second.
My default approach is the first but despite hours of tinkering and forwarding tricks it never works. I’m leaning more to the second but having a dedicated gateway guest seems like a waste of resources - logically the host should be doing it.
And yes, SNAT is enabled 😅
Proxmox is a virtualization solution: let it do its job and run a vm with opnsense.
It is simple both from a virtualization and a networking perspective; your hypervisor is ‘hypervisoring’ and the firewall is firewalling, easier to maintain and debug, no custom thinkering required.
If you are at home go with #1, more fun and lots of discoveries; if you have to pay the bills, go with #2, tested, solid, easier to handoff to your colleagues.
I’m at home but networking/firewalling does my tits in - #2 for me I think 😅
(me too i did #2 at home…)
I’m always uncomfortable doing #2 anywhere but at home.
For me it depends on the hw on site; if it is properly setup and in an adequate environment i have no issue anywhere.