1/ define vmbr1 in proxmox interface :
<sxh>192.168.0.254
255.255.255.0</sxh>

2/ execute in host :

Get access to the outside

<sxh>
iptables -t nat -A POSTROUTING -s 192.168.0.0/24 -o vmbr0 -j SNAT --to xxx.xxx.xxx.xxx
</sxh>

get access from the outside
<sxh>
iptables -t nat -A PREROUTING -p tcp -d xxx.xxx.xxx.xxx --dport xxx -i vmbr0 -j DNAT --to-destination 192.168.0.1:xxx
</sxh>

or

<sxh>
iptables -t nat -A PREROUTING -p tcp -d xxx.xxx.xxx.xxx --dport 10000:10100 -i vmbr0 -j DNAT --to-destination 192.168.0.1
iptables -t nat -A PREROUTING -p udp -d xxx.xxx.xxx.xxx --dport 10000:10100 -i vmbr0 -j DNAT --to-destination 192.168.0.1
</sxh>

<p>

[[https://openvz.org/Using_NAT_for_container_with_private_IPs|Source]]
[[http://ungeek.be/comment-rendre-accessible-sur-internet-un-vps-ayant-une-ip-privee-faire-du-nat/|Source]]
[[http://opensimulator.org/wiki/NAT_Loopback_Routers|Source]]

{{tag>vps nat proxmox openvz}}