Example: Monitoring TCP Connections Established for a Device
Too many TCP connections can signal that a device is being maliciously used, in the case of a workstation, or that your web server is close to maxing out, indicating the need to initiate a backup server. You can create an SNMP active monitor to watch a range of established TCP connections for a particular device. If the number of connections goes above the range you specify, you can be notified by an associated action.
To configure a TCP monitor:
- From the WhatsUp Gold web interface, go to . The Monitor Library dialog appears.
- Click , select , then click . The Add SNMP Monitor dialog appears.
- Enter a and for the monitor. For example, Number of
TCP connections less than 2000
. - For the and , click browse(), then locate the (1.3.6.1.2.1.6.9) SNMP object in the MIB object tree.
- Select from the Check type list and enter 1999 (the maximum number of established TCP connections) as the and 0 as the , then click . Any associated actions fail when the number of established TCP connections reaches 2000.
- Test the newly created active monitor and make appropriate changes if needed.
- Assign the active monitor to the web server:
- Right-click on the device on the appropriate device, then click . The Device Properties Active Monitor dialog appears.
- Click .
- Using the configuration wizard, create or select an action to notify you when the number of established TCP connections reaches 2000.