Private Network on Proxmox VE 6

[spy8989]

Hello,

I am trying to set up a private network on proxmox. I did it according to the documentation https://pve.proxmox.com/wiki/Network_Configuration, but the machine does not have internet access. Proxmox is installed on a dedicated server that has only one NIC card.

Below I am sending the configuration that is currently applied on server.

# network interfaces
    auto lo
    iface lo inet loopback

    iface eno3 inet manual

    auto vmbr0
    iface vmbr0 inet dhcp
      bridge-ports eno3
      bridge-stp off
      bridge-fd 0

auto vmbr1
iface vmbr1 inet static
  address 192.168.50.1
  netmask 255.255.255.0
  bridge_ports none
  bridge_stp off
  bridge_fd 0
  post-up echo 1 > /proc/sys/net/ipv4/ip_forward
  post-up   iptables -t nat -A POSTROUTING -s '192.168.50.0/24' -o vmbr0 -j MASQUERADE
  post-down iptables -t nat -D POSTROUTING -s '192.168.50.0/24' -o vmbr0 -j MASQUERADE

Could I please help with the configuration?

 

[Dunuin]

Don't forget to add this if you enabled your firewalls:

post-up   iptables -t raw -I PREROUTING -i fwbr+ -j CT --zone 1
post-down iptables -t raw -D PREROUTING -i fwbr+ -j CT --zone 1

 

[spy8989]

I add this but still no connection from VM to Internet. Are the rules you specified to be added instead of

post-up   iptables -t nat -A POSTROUTING -s '192.168.50.0/24' -o vmbr0 -j MASQUERADE
post-down iptables -t nat -D POSTROUTING -s '192.168.50.0/24' -o vmbr0 -j MASQUERADE

or as additional?

 

[Dunuin]

additional

 

[spy8989]

I added rules as additional and now gets destination host unreachable when trying to ping 8.8.8.8

 

[spy8989]

I reinstall whole Proxmox and now all works, @Dunuin thanks for help