Internet Connection Share with Hyper-V VMs

I’ve 2 VMs in Hyper-v on Windows Server 2008R2 which is directly connected to the Internet. My one VM is Domain Controller and another is Exchange Server. Both the VMs are configured as Static IPv4 as well as the Host PC. Now I want my VM’s to be connected to the internet to Update the Windows Server 2008 R2.

Can anyone please provide me any information regarding this?