I am trying to redirect a certain port range in a linux host to one of its guest VMs. I would like for this redirection to apply to all the host's interfaces, including localhost. I was able to do:
iptables -I FORWARD -m state -d 192.168.122.0/24 --state NEW,RELATED,ESTABLISHED -j ACCEPT iptables -t nat -I PREROUTING -p tcp --dport 8000:8500 -j DNAT --to 192.168.122.158
Where 8000:8500 is the range I am interested in forwarding and 192.168.122.158 is the guest's IP. This works as long as I am trying to connect from another machine, i.e. not the VM host. But I would also like to be able to forward traffic that originates inside the VM host.
Hope that is clear, sorry if I mangled the terminology.