I have a D-Link DIR-615 X1 router, WAN is configured as Static IPv4 with no port forwarding/UPnP/DMZ configured, and I can ping from a device or router to a device, router, or internet; however, if I attempt to ping my WAN IP from a device connected to the router, it fails with error Request timed out
(I tried again, first with a different device connected to a different network, then with a remote monitoring tool).
All I found on the web was something about NAT Loopback (hence trying with a different device) and routers not being configured to respond to ICMP echo requests.; unfortunately, I found no guides to enable this - is this the problem I'm having?
Is this the best place for this question, or should I have put it somewhere like Serverfault?
UPDATE:- After following mashuptwice's answer (enabling ping in WAN settings), I can now ping my external ip address from a device within my network, but not from outside.
/etc/config/firewall
], which does allow bi-directional ICMP pings)