I have 4x IP cameras that I access using my Android phone transparently both from within my local network, and externally using my external static IP. 

Thankfully along with port forwarding on my Technicolor TG589vn V2 VDSL modem this works very well due to NAT loopback. 

Looking ahead to when we'll move to Spark fibre around December, I'm thinking ahead and have an HG659b on the way as I believe the HG630 doesn't support NAT loopback.

Does the HG659b support NAT loopback and if not, any suggestions for an easy to setup router that I could use instead? Would one of the TP-Link Archer models interface directly to the ONT?

I'd prefer to keep this simple rather than setup DNS servers etc, even if security isn't as good.