Untangle server

Anybody know how I could install the untangle server as a transparent proxy on my WAN interface?

The sever installed correctly I just need to figure out the NIC interfaces because it creates a loopback.

I’ve got NAT & Firewall already on my router.

Two ports being used one to the switch for the LAN and another that goes to the WAN.

This is a prexisting network with mikrotik router and I’m trying to figure out how to filter/proxy social/dating and other sites…

I’ve googled every possible term and nothing seems to work out…

I have previous answered the same style of question in

http://forum.mikrotik.com/viewtopic.php?uid=65575&f=13&t=77635&start=0

Let me know if that dosn’t work