I am unable to get internet traffic through the UTM.

Question

I have UTM Home v9.3551 virtualized on VMWare Workstation 10 on Essentials 2012 R2. I have a 4 port gigabit Intel nic configured as internal and external interfaces for the UTM. As my instance of the UTM is virtualized I have left my FVS318Gv2 Netgear VPN Firewall in place. 
 Current Configuration: 
 The external interface is connected to the vpn firewall with the internal interface connected to a 16 port web managed switch. The internal interface is on a different subnet than the internal interface. 
 Can the UTM work in this configuration? 
 Other configurations I have tried: 
 Internal interface plugged into the modem (partial bridge mode; static IP w/RIP on the ISP side) with the static IP information entered and the internal interface plugged into the switch. 
 In neither configuration have I successfully gotten internet traffic through the UTM.

William Warren · Accepted Answer

what security risks? The utm itself is not perfect. I run hyper-v with UTM virtualized with it on the front lines. VMWare is not a huge risk if you have it properly configured and you keep it updated(like any other software). double-natting like this only causes other headaches(like you are experiencing now).