Supported Active Monitors

The following is a list of all of the Active Monitor types that are supported by WhatsUp Gold.

Active Script Monitor. The Active Script Monitors let you write either VBScript or JScript code to perform a check on a device. If the script returns an error code, the monitor is considered down.

Note: Please be aware that Ipswitch does not support the scripts that you create, only the ability to use them in the Active Script Monitor.

• DNS Monitor. The DNS monitor is a simple service Monitor that checks for the DNS (Domain Name Server) on port 53. If no DNS service responds on this port, then the service is considered down.

Email Monitor. This monitor checks a mail server by first sending the server an email via SMTP. The monitor then attempts to delete previously sent emails using either POP3 or IMAP. If no emails from the monitor are present in the inbox to delete, the mail server is considered down.

• The email active monitor supports encryption with SSL/TLS and SMTP Authentication which ensures that the monitor sends emails to a secure email account.
• SNMP Monitor. The Simple Network Management Protocol is the protocol governing network management and monitoring of network devices and their functions. This monitor queries the SNMP device and tries to match the expected returned value.
• Telnet Monitor. Telnet is a simple service monitor that checks for a Telnet server on port 23. If no telnet service responds on this port, then the service is considered down.
• Ping Monitor. The Ping monitor sends an ICMP (ping) command to a device. If the device does not respond, the monitor is considered down.
• TCP/IP Monitor. The TCPIP monitor is used to monitor a TCPIP service that either does not appear in the list of standard services, or uses a non-standard port number.

NT Service Monitor. The NT Service Monitor checks the status of a service on a Windows machine and attempts a restart of the service (if the appropriate Administrator permissions exist).

Note: A running Windows Management Instrumentation (WMI) service on the targeted machine is required for this NT Service Monitor to work properly. Windows 2000 Service Pack 2 or higher, XP, and 2003 are installed with the WMI service. WMI is not installed with Windows NT, but can be downloaded from Microsoft and installed on Windows NT.

WhatsUp Gold Premium supports additional Active Monitor types:

• Microsoft® Exchange™ and Microsoft SQL Server Monitor manages the availability of key application services, rather than just the network visibility of the host server.
• General application monitoring using Microsoft's WMI monitors any performance counter value you specify, and triggers an alarm if the value changes, goes out of range, or undergoes an unexpected rate of change.

For more information, see Using WhatsUp Gold Premium Edition.