Installed into VM, no ports reachable. Now what?

Hi,

I am planning to install OMV to my Netgear NAS. But before I want to try it in Oracle VirtualBox.

I installed it, booted it... but the web port is not reachable.

(host) $ nmap -Pn  10.0.2.15
Starting Nmap 6.47 ( http://nmap.org ) at 2016-05-10 09:47 CEST
Nmap scan report for 10.0.2.15
Host is up.
All 1000 scanned ports on 10.0.2.15 are filtered

So the network is set up correctly?! (NAT mode) OMV is able to reach the internet.

I tried omv-firstaid, but this did not help.

How do I start the web-ui?

thanks

JPT

Thanks, worked.
I expected the vm-host to be the gateway between the real and the vm-network and so access trough NAT only required from other devices in my real network but not from the vm-host itself.