Can I ping router and also device behind NAT on the same time?

RouterOS General
1

Hello,
I want to know if I can ping a remote router , and also ping device that connected to him(after using NAT-dst nat - protocol icmp)?

I know that if I diable ping to the router
and add new nat rule with ping - I can get response from the device

but can I do both somehow? then I will know if my device is not responding or the router

Thanks ,

2

You can’t if end device is behind the router, they will share same WAN IP address.

What you can do is TCP traceroute … which targets service TCP port. For NATed service, you’ll see same WAN IP address twice (or even more times if there are additional routers behind NAT) if everything is fine. If device running the service will be dead, then TCP traceroute actually won’t finish the trace … because TCP traceroute is done when TCP SYN packet gets proper answer (TCP SYNACK) and not ICMP time exceeded (which reveals the intermediate hops).