Hardware: DGL-5500A1 There was only 1 version of this router, according to wikidevi.com
Firmware Version : 1.13 , 19, Dec, 2014 ( new upgrade today, not fully tested yet)
Region: Ottawa, Canada
ISP Service: TekSavvy DSL 15/10
ISP Modem: RG505n in bridged mode
VDSL2 uses pppoe with DHCP included for WAN ip
To get a ping reply from the WAN, I currently use an ASUS RT-N10P router between the modem and the DGL-5500 router.
A LAN ssh server would do the trick too, but would be a manual hack in the firewall tables.
Thanks