I am experiencing a problem with ping/trace route for external sites such as 8.8.8.8. When trying to ping any site beyond on the Internet, none of the computers behind the modem receive a response (i.e. the ping request times out). For route tracing, the modem appears as the first hop, then it's all time outs. I have tried all of the following steps:
- Tried various computers
- Used a network connection directly from the modem
- Flushed the DNS cache
- Flushed the DHCP allocations
What makes me suspicious of the modem is that I accessed the modem management software, went to the Diagnostics tab and performed a ping and a traceroute on 8.8.8.8. That worked as expected.
In summary:
- When using the modem internal diagnostics, Ping and Trace Route work perfectly
- When using a computer that goes through the modem gateway, ping and trace route requests time out
I am aware that the modem can block incoming ping requests, but I never heard of a modem blocking outgoing pings.
Suggestions?
