Ok I stumbled upon another link and it looks like this way works. The only thing that this article didn't say is to add your IP to your mac host. Which I got from the other articles above.
sudo nano /private/etc/hosts
10.211.55.5 windows
https://gist.github.com/justingarrick/6322779#file-iis_parallels_win8_mac-md
Expose IIS or IISExpress running in a Parallels Windows 7/8 VM to your OS X host
Rename your virtual machine 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.
Add an ACL rule 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
Add a firewall rule 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
Configure the IIS binding 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.
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.
Restart IIS/IISExpress 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
Sources
IIS Express enable external request IISExpress returns a 503 error from remote machines http://www.hanselman.com/blog/WorkingWithSSLAtDevelopmentTimeIsEasierWithIISExpress.aspx