[SOLVED] Virtualbox networking

Hi,

Host : Lubuntu : 14.04
Guest : Lubuntu 14.04

I want to run a service which needs a specific port to be opened.

I have done port forwarding on my router.

I don't want to open any ports on my host (Lubuntu).

I am thinking of opening that port only on the guest (also Lubuntu).

Is this possible ? Please tell me how how to configure the networking part in Virtualbox.