When monitoring the remote servers from the local network there is always a
chance that the server check will fail because of the Internet connection problem.
The server may still be alive, but your
server monitoring software
wouldn't be able to connect to it, and will fire the specified notification
events, like when the server is down. This will lead to storing incorrect
downtime statistics and to the unwanted support calls.
This situation can be easily avoided with ProtoMon. Every monitor has the
Check Internet Connection option on the General tab. When this
option is enabled, ProtoMon will differ the Internet connection problems and
the server monitoring failures.
You will need to configure some additional settings to help ProtoMon to
distinguish between those types of failures. Select the
Options -> Monitoring Settings main menu item to open the following
Specify the list of the Always accessible servers one per line. These are
the Internet servers which are always up. When the monitor check fails, ProtoMon
will automatically try to ping these servers. If any of them responds, it means
that the Internet connection is available and your server is really down.
Otherwise it is the Internet connection problem.
By default, ProtoMon will not generate any notification events, if the monitor
check failure is caused by the Internet connection problem. If you need this
kind of notifications, enable the Trigger the alerts, when the Internet
connection fails option.