Install Windows 7 on Kimsufi Proxmox VM 5 : no internet on VM

[Entretoize]

Hello, I installed "Proxmox VM 5 os" on my kimsufi server, then I created a Window 7 virtual machine selecting VirtIO (paravirtualized) for the network (vmbr0).
But there's no internet on the vm.
After reading some tutorial I created a second linux bridge adding that in interfaces :

auto vmbr2
#private sub network
iface vmbr2 inet static
        address  192.168.1.1
        netmask  255.255.255.0
        bridge_ports none
        bridge_stp off
        bridge_fd 0

        post-up   iptables -t nat -A POSTROUTING -s '192.168.1.0/24' -o vmbr1 -j MASQUERADE
        post-down iptables -t nat -D POSTROUTING -s '192.168.1.0/24' -o vmbr1 -j MASQUERADE

And set the ipv4 properties in the vm with ip 192.168.1.2, and windows seemed to recognize the network asking if it was home or professionnal network, but that changed nothing and still have no internet connexion.
I don't need the machine to be accessible from outside using rdp or something else, but I need it to have access to the internet.

Thanks for any help.

 

[spirit]

can you send your full /etc/network/interfaces ?

 

[Entretoize]

Sure, here it is :

# The loopback network interface
auto lo
iface lo inet loopback


# vmbr0: Bridging. Make sure to use only MAC adresses that were assigned to you.
auto vmbr0
iface vmbr0 inet static
        address 91.12X.XXX.XXX/24
        gateway 91.12X.XXX.254
        bridge_ports enp4s0
        bridge_stp off
        bridge_fd 0

auto vmbr2
#private sub network
iface vmbr2 inet static
        address  192.168.1.1
        netmask  255.255.255.0
        bridge_ports none
        bridge_stp off
        bridge_fd 0

        post-up   iptables -t nat -A POSTROUTING -s '192.168.1.0/24' -o vmbr1 -j MASQUERADE
        post-down iptables -t nat -D POSTROUTING -s '192.168.1.0/24' -o vmbr1 -j MASQUERADE

 

[spirit]

so replace

 post-up   iptables -t nat -A POSTROUTING -s '192.168.1.0/24' -o vmbr1 -j MASQUERADE
 post-down iptables -t nat -D POSTROUTING -s '192.168.1.0/24' -o vmbr1 -j MASQUERADE

by

 post-up   iptables -t nat -A POSTROUTING -s '192.168.1.0/24' -o vmbr0 -j MASQUERADE
 post-down iptables -t nat -D POSTROUTING -s '192.168.1.0/24' -o vmbr0 -j MASQUERADE

 

[Entretoize]

Yes, stupid... but still doesn't work, how must I configure the ipv4 on the vm ?

 

[spirit]

I'm not sure, but in the vm add an ip in 192.168.1.0/24 with 192.168.1.1 as gateway.

also check on your proxmox host, that sysctl ip_forward is enabled

sysctl -w net.ipv4.ip_forward=1