I want to impliment pfsense to the local network. So before that I have to test it in a virtual environment, say couple of virtual-machines in an Ubuntu host using virtual box and one pf-sense machine which act as a router. Only the pf-sense machine will have real LAN access (for internet), and for all the local VMs ip will be provided by the pf-sense.
Problem is in VB which network interface have to be used for the virtual machines and the pf-sense. For pf-sense I can use bridged adapter for one network interface to get connected to the real LAN. But what will be the other network interface which is only used to communicate to only the LAN machines?