I have done a similar configuration in the past, but to a rpi instead of a NAS.
80 and 443 redirect to the rpi, and my 2925's web interface is on 8080.
Used NAT | Open Ports and had an entry for 80 TCP/UPD to the static IP of the rpi
WAN interface: WAN1
Source IP: Any
repeated for 443
Vodafone Fibre (Superfast2 - 80/20), Draytek 130, DrayTek 2925, DrayTek AP-910c x 2
(Gone but not forgotten: AP-700, 2820n x 2, 2800vg, 2800, HG612)
Speedtests:
ThinkBB - Mini |
ThinkBB - Full |
Speedtest.net