Network Monitor



 
 
Network Monitor Agents
 
Distinct Network Monitor may be set up to monitor remote Agents. The Network Monitor license comes with one Agent and additional Agents may be purchased and deployed as needed.

Once the Agents have been installed, you need to define and configure them before they can be started. The port to listen on and the password must be set. The mask string(s) may also be set at the Agent. Before starting the capture some configuration needs to be done for each Agent from the Network Monitor.

Configuring Agents from Network Monitor

Before an Agent can be configured it must be defined as an Agent to which access will be allowed by the Network Monitor. To do this select Agents from the Configure menu. Then:
  1. Enter the host name or IP address of the Agent to be added in the name field.
  2. By default each Agent will listen on port 9999 for instructions from an authorized Network Monitor. Port 9999 is a well-known port that is assigned to Distinct Corporation and should therefore not be in use by other applications. If you have set up the Agent to listen on a different port you must enter that port number here. The password used must also be the same password that was used to configure the Agent.
  3. You may test the connection by selecting the Agent’s name in the Distinct Network Monitor Agents list box and clicking the Test button. This will attempt to connect to the Agent to see if it is up and running.

Defining Capture Settings for an Agent

Before you can start a Capture or statistics on an Agent you must define its Capture Settings directly from the Network Monitor (if you do not do this the system will automatically prompt you to do so the first time round). Once you have added the Agents through the Agents Configuration tab, you are now ready to configure them by selecting Capture Settings from the Configuration menu.
  1. Select the Agent to be configured in the System pull down list box. If you have not saved the password on your system for this agent, you will be asked to enter the password. Note that this is the password that was given when the Agent was installed.
  2. Enter the complete path of the folder in which you wish the capture file to be created or use the Browse button to locate it. Note that Network Monitor will remember the last capture setting saved for each folder.
  3. If the system has more than one adapter you may select the adapter or adapters from which you wish to record the network traffic. By default Network Monitor will capture the traffic from all the adapters on the system.
  4. If you wish to only save the traffic related to specific protocols or that meets the criteria specified by any filter you have created, select the appropriate filter from Filter to apply. Before you can select a filter you will need to create it. See the chapter “Using Filters” for details on how to do this.
  5. You may also choose to mask certain information from the actual capture. For example, if you know that to reproduce an error you are trying to diagnose you must access a certain database record that would display a social security number, you could enter that number here and the actual capture will mask the information allowing you to get help without giving out any sensitive information to other engineers helping you. Passwords may also be masked in this way. You may have more than one entry. Entries should be space, comma or semi-colon delimited. All entries are case sensitive.
  6. You may also include or exclude broadcast packets from your capture.
  7. You may select to capture only those packets that are sent and received from the system running Network Monitor, thus ignoring all other packets on the subnet.
  8. Click Close to save your settings.
Starting a Capture or Statistics on an Agent
 
Remote Agents can capture both Packets and Statistics or just the statistics.

Capturing Packets on an Agent

To capture and analyze packet from a remote Agent you must first configure the Agent as described above then click the little triangle button to start the capture. Both the packets and statistics will be captured. Network Monitor can capture packets from one remote Agent at a time.

Capturing Statistics on an Agent

Distinct Network Monitor allows you to capture Statistics from multiple Agents at the same time. The results may be displayed in individual windows, one per Agent.
To start the Statistics capture:
  1. Select the Statistics command from the Capture menu or click the statistics button in the menu bar.
  2. Choose the Selected Agent(s) radio button. Then select the Agents you wish to monitor from the list box.
  3. If you have not saved the password for each Agent on your local system, you will need to provide the password to connect to each Agent before it can be started. If you are using a single password for all Agents in question select the Use Password radio button and enter the password and port to be used for the connection to all Agents. If you are using different passwords for each Agent, you will need to enter all the passwords one at a time before you can connect to the Agents.
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