I am running Ubuntu Server 10.04 on a VirtualBox virtual machine from a Windows 7 host.
How do I open access to this guest virtual machine from the internet?
U can access your vm anywhere by " D D N S " link (what it does give u static link and make your dynamic ip auto updated through DDNS link )
Example link would like this xxx.no-ip.org
now u need to DMZ to the ip of vm
NOW OPEN VIRTUAL BOX > CLICK ON VM > SETTINGS > NETWORK
NOW USE STATIC IP AS I HAVE DMZ TO IP 192.168.0.200 SO MY VM IP SHOULD BE 192.168.0.200
There are Lots Of DDNS Services , But U Need To Check Which One Your Router Support By DDNS > Service Provider