In your Windows 7/8 VM, go to Control Panel > System > Advanced system settings > Computer Name and click Change. Name this whatever you like, e.g. windows. Restart your VM.
Open CMD or Powershell as administrator. Add a URL ACL entry for your new name on the port of your choice, e.g.
netsh http add urlacl url=http://windows:8080/ user=everyone
Open CMD or Powershell as administrator. Add an inbound firewall rule for this new port.
In Windows 8, the syntax is:
netsh advfirewall firewall add rule name="IISExpressWeb" dir=in action=allow protocol=TCP localport=8080
In Windows 7, the syntax is:
netsh firewall add portopening TCP 8080 IISExpressWeb enable ALL
If you're using IISExpress, edit your applicationhost.config file, typically found at your Documents\IISExpress\config\applicationhost.config. Find your site under sites, and add a binding to the port using your machine name, e.g.
<bindings>
<binding protocol="http" bindingInformation="*:8080:localhost" /> <!-- This will be here already -->
<binding protocol="http" bindingInformation="*:8080:windows" /> <!-- Add this -->
</bindings>
If you're using IIS, open IIS Manager, find your site under YourMachineName > Sites > YourSiteName. Right-click and select Edit Bindings.... Add a binding with the host name you selected in step 1, e.g. Type: http, IP address: All Unassigned, Port: 8080, Host name: windows. Click OK.
Startup IISExpress with Visual Studio or restart IIS from IIS Manager and hit your URL from a browser on your Mac/VM Host, e.g. http://windows:8080
http://stackoverflow.com/questions/3313616/iis-express-enable-external-request http://stackoverflow.com/questions/5442551/iisexpress-returns-a-503-error-from-remote-machines http://www.hanselman.com/blog/WorkingWithSSLAtDevelopmentTimeIsEasierWithIISExpress.aspx
I tried these instructions and it worked for the most part, but like @miguelhughes said, I had to edit the applicationhost.config in my solution's .vs directory. I also had to disable the Windows firewall completely for some reason.