App Service to VNet Connection

Hi All,

I've created a VNet and VNet gateway and selected that VNet as the Web-App VNet but I still can't connect to ElasticSearch running on a VM within the VNet.  The public IP address responds on port 9200 so I know elasticsearch is running fine, however when using the private ip address from my website (10.1.0.4) I can't connect.  I've removed all security groups and also tried adding one for port 9200 but I still can't connect in either scenario.  I've also tried the various binding options in elasticsearch.yml but to no avail.  I'm sure I'm doing something wrong - does anyone have any ideas?

Thanks in advance,

Chris