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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.

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  • 1) Did you get the public IP address from the router's own status screen, or from a "what's my IP" kind of website? 2) Is it actually a public IP address and not a 100.64.x CGNAT address? 3) Also, ping to the WAN address isn't the same thing as ping from WAN (this is kind of where the "NAT loopback" issue comes from) Feb 28, 2022 at 18:26
  • Your router is doing the equivalent of "Shhh! I'm not here".
    – harrymc
    Feb 28, 2022 at 19:00
  • @user1686 1) I got it from a website. 2) It's in the form of 103.252.xx.xx 3) Yes, I pinged it from a device not connected to the router, so that counts as from WAN to WAN address, right?
    – SubhoBoy
    Mar 1, 2022 at 5:11
  • (Please do not post non-public WAN IPs in questions/answers, as it's a security risk for the user doing so.) All routers have a stateful firewall that blocks all inbound WAN traffic by default that did not originate as a new connection from the router/downstream devices (the only exception to this I've come across is OpenWrt's default firewall config [/etc/config/firewall], which does allow bi-directional ICMP pings)
    – JW0914
    Mar 1, 2022 at 13:38
  • @JW0914 Of course, that was just an example. And I have no rules configured in my router's firewall. I tried to configure a rule to allow ICMP connections to my router, but since my public ip address is dynamic, I have no idea what to put in the destination ip address field. Just leaving it blank does nothing. As such, I am stumped. :|
    – SubhoBoy
    Mar 2, 2022 at 10:28

1 Answer 1

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Page 62/63 of the D-Link DIR-615 X1 user manual:

settings

Ping:   If the switch is moved to the right, the router responds to ping
        requests from the external network through this connection. For
        security reasons, it is recommended to disable this function
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  • Unfortunately, the X1 hardware revision looks absolutely nothing like the other models, both physically and in the web interface. As such, most info about the DIR-615 found online is useless for me. Only place I found the correct details and user manual was by searching on fcc. The router id is KA2-IR615X1.
    – SubhoBoy
    Mar 1, 2022 at 5:16
  • @SubhoBoy The manual for the X1 was also pretty easy to find. Added the instructions for your X1 model. Mar 1, 2022 at 9:45
  • Updated question with current status
    – SubhoBoy
    Mar 2, 2022 at 9:51

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