title: Azure application gateway restrict by source IP and server name
body: <p>We have an Azure Appgw running fronting several different backend web servers in what used to be a "named virtual host setup".</p>
  
  <p>We want to restrict the access to one virtual named host by request IP.</p>
  
  <p>I know you can have a firewall entry as Network Security Group on the AppGW virtualnetwork/subnet.</p>
  
  <p>But this is a simple layer 3 filter, no option to select the HTTP host name in the filter rule.</p>
  
  <p>Any options other than setting up another AppGW?</p>