I am trying to investigate some odd behaviour on one of our VDSL connections (SRX320). Via this connection it is not possible to ping (or at least receive the responses from) 184.108.40.206, but I can ping 220.127.116.11 . Tracert completes for the latter and not to the former, unsurprisingly. We have no such issues at alternative identically configured sites, so I just can't figure out what is going on.
It has been suggested by someone much wiser than I, that I check for the ICMP echo-reply packets returning from 18.104.22.168. How can this be achieved?