Proxmox Networking SDWAN (Contabo)

[shehuawwal]

Hi Everyone, I have looked through many threads before writing this, I am using a dedicated a server on Contabo and also purchase 2 additional public IP Address.

I am running on Proxmox 8.1.4

All the additional IPs are all working and I can access the Proxmox Web UI, But I am having this issue.

I cant assign a IP to a vm by adding the vmbr0, or vmbr1 or vmbr2 interface I created, It's not getting any IP. Hence I created an SDWAN Zone With A Private IP address.

Issue 1 - The VMs are getting a private IP address but unable to download some files, but on the proxmox host, the files can be downloaded.
Issue 2- I cant portforward any interface to any VM except I use vmbr0, I have other public IP address on vmbr1 and vmbr2, I want to portforward base on that interface,
That didn't work.

Is there a way I can assign any of the public IP address to a vm directly?

Any Help?

auto lo
iface lo inet loopback


auto eth0
iface eth0 inet manual


auto eth1
iface eth1 inet manual


auto vmbr0
iface vmbr0 inet static
    address 5.5.5.5/24
    gateway 5.5.5.5.1
    bridge-ports eth0
    bridge-stp off
    bridge-fd 0


auto vmbr1
iface vmbr1 inet static
    address 161.79.115.212/18
    bridge-ports none
    bridge-stp off
    bridge-fd 0






auto vmbr2
iface vmbr2 inet static
    address 161.79.114.212/18
    bridge-ports none
    bridge-stp off
    bridge-fd 0

 

[_gabriel]

I'm not sure of what you want to do, but if you want a private subnet for your VM, you can make a subnet from SDN section of Datacenter.
then forward port / NAT adding a post-up iptables rule line to /etc/network/interfaces.d/sdn

auto vnet1
iface vnet1
        ...
        post-up iptables -t nat -A PREROUTING -i vmbr0 -p TCP -m multiport --dports 80,443 -j DNAT --to private.ip.of.internal.vm

 

[pille99]

it sounds to me you are missing something like a gateway/firewall, which forwards the traffic to the desired destination