VM closed ports when scanned from host

I have installed Metasploitable on my Virtualbox, setting up Bridged Adapter. I try to scan it with Nmap from my host machine, but I got the report:

Host is up (0.00029s latency). All 1000 scanned ports on 192.168.*.* are in ignored states. Not shown: 1000 filtered tcp ports (no-response) MAC Address: <Oracle VirtualBox virtual NIC> 

Where is the problem now?

1 Answer

The problem was with my VPN. When I turned off my VPN, Nmap scans and shows all open ports as it should on Metasploitable.