...but i don't understand why you would like an integration of shorewall : if you need it, it's an easy one to install and it should work if you just open the same ports you can see in the default firewall. I think it's not virtualizor who need to release an integration for this third party tool. Shorewall team should perform development on this, or someone else, since it's a third party script. I think they are doing it great with their current firewall... they are maybe missing something like psad though, but it's also easy to install.