I want to use a Unify Security Gateway (i.e Firewall) behind my Virgin F3896LG-VMB. I think this means I want to use the Virgin gateway as a modem and supply the external IP address to my USG. Can anyone explain how I get the External IP address to my USG instead of the F3896LG-VMB? Thanks!
You've probably resolved this already but what you need to do is put the HUB 5 into modem mode (also applies to the previous hubs). You can then use one of the ports (if you have 2.5G port, e.g. Dream Machine Pro SE or Dream Machine Pro with SFP to RJ45 - my setup) then you'll want to use Port 4 (with the 2.5G label).