Bring VLANS from our Datacenter to the Remote-Office (Red 15w)

Question

Is it possible to do the following: 
 We have got a lab-environment in our datacenter. We installed a Sophos UTM and defined multiple VLANS which are attached to the VMs on our Hyper-V-Host. In our remote-office is a Sophos RED15W, connected via RED-Connection (Unified / Standard). We want to establish some sort of connection to our remote-office to connect our local infrastructure to one of the multiple VLANS to get a direct connection to our datacenter. It is important to get a sort of level-2-connection because we need to use the DHCP of the datacenter in our remote-office for some testing. In my opinion we don`t need to configure routing or firewall-rules in this case. How to configure the RED-Connection as a VLAN-Trunk which is linked to one of the RED15W LAN-Ports? Is it possible to configure multiple untagged Wifis for direct access to the VLANs? See my network diagram below. 
 6138.sophos2.pdf

lna · Answer

Hi Manuel, 
 having multiple vlans on a RED15 is possible, every port is then a trunk Port, you'll need a vlan capable Switch in the remote office to assign clients to the correnct vlans. 
 Please notice that the red is unable to do routing between vlans, all inter-vlan-traffic is routed by the UTM in your Datacenter which means that the inver-vlan-traffic causes double load on your internet connection. 
 
 you can build a transparent L2 if you create a bridge interface between a red interface and one of the local interfaces of the UTM. please do not use this configuration if your UTM is a vmware virtual machine. it will cause high load on your hypervisor (i crashed a Datacenter IAAS environment this way.. vmware bug...) 
 
 yours Lukas