I have a Windows 7 virtual machine that I sometimes use for Windows-specific applications at my school. The host machine is running Fedora 19 and the virtualization program I'm using is VirtualBox.
Here is my problem: this semester, I am unable to access the internet on my virtual machine. I was able to before, but has been four months since I last attempted and there has since been an operating system reinstall, kernel upgrades etc. plus whatever changes the school made to their network so I don't know what that's worth.
I have tried accessing the internet by using a bridged adapter (my original configuration) and by using NAT. With the bridged adapter, I not only fail to connect but actually get kicked off the network on the host machine! I don't know if that's intentional or what. Both configurations work on my home network.
With NAT, the problem seems more manageable - I am able to connect to the network itself. However, Windows gives me a "No Internet Access" warning on the little network icon. I am able to ping Google's free DNS servers and the IP address I got from an nslookup of Google.com, but attempting to ping anything via domain name (as opposed to IP address) fails. This holds true even if I assign those very servers as my DNS servers.
I also tried doing an nslookup of Google and accessing the address I got through my web browser. This failed. However, I didn't have the chance to test any other sites so I don't know if that's an isolated issue. I'll do some further testing tomorrow if I can.
It seems unlikely that my school would be deliberately blocking virtual machines from accessing the network (if doing so in this way is even possible) - I've been specifically instructed to use them for classes in the past.
Does anyone have any ideas as to what might be happening and, ideally, what I can do to fix it?