[Pool] Monitoring says my server is unreachable

Rob Janssen rob at knoware.nl
Wed Feb 26 18:58:09 UTC 2014

Arnold Schekkerman wrote:
> NTP to your system does not work, but ping does, so it is not a routing issue and
> not _all_ traffic is blocked.

I would not be surprised if parties (not XS4ALL yet, but others involved in routing) have started
to block all NTP traffic as a quick stopgap to the reflection attacks that we have seen recently.
Or maybe have implemented some automatic blocking of a subnet when there is too much NTP
traffic from or to that subnet.


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