You can
already see how simple Downtime Witness is to work with. Choose a name
for the site and input its URL or IP address. If you have a setup with
many web sites monitered, you can easily activate or suspend monitoring
for each.
Another
nice feature is the Internet connection verification option. Input some
sites that you know are never offline and this ensures that it is your
site that is offline and not your Internet connection. The alarm will
activate if your site does not respond while at least one of these does.