The Domain Name Server (DNS) monitor is a simple service monitor that checks for the DNS on port 53. If a DNS service does not respond on this port, the service is considered down.

Credentials are not required for the DNS Monitor.

Configure the following:

  • Name. Enter a unique name for the active monitor. This name displays in the Monitor Library.
  • Description. Enter additional information about the monitor. This description displays next to the monitor name in the Monitor Library.
  • Timeout. Enter the length of time Network Performance Monitor attempts to connect to the selected device. When the time you enter is exceeded without connecting, a timeout occurs and Network Performance Monitor stops trying to connect to the DNS server. This is considered a failed connection.
  • Use in Rescan. Select this option to have the monitor appear in the Active Monitor list on the Device Properties page. Network Performance Monitor adds the monitor type to the device during a rescan, which is started using the Rescan button on the Device Properties dialog, if the protocol or service is active on the device.