The Network News Transfer Protocol (NNTP) Monitor tests the ability of a News server to accept incoming sessions, as well as its level of responsiveness.

NNTP servers are used for the distribution, inquiry, retrieval, and posting of news articles. News articles are stored in a central database, allowing subscribers to select only those items they wish to read, and include the ability to index, cross-reference and expire messages.

The NNTP Monitor:

1. Opens a connection to the specified NNTP server and waits for the service to respond.
2. Considers the test successful if a valid Server Ready connection code is returned within the specified Maximum Test Duration.
3. Safely disconnects from the server upon receipt of the Server Ready code. The NNTP server then sends a code indicating that it is disconnecting the socket.
4. Considers the test to have failed if the NNTP server fails to respond or responds with an error code indicating that the service is not available.

Use the NNTP Monitor to test that:

• A NNTP client can open a connection with a NNTP server
• The server adheres to the NNTP protocol by responding with the correct codes
• The server responds within a required number of seconds

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The Test Parameters dialog box is used to specify the parameters that the NNTP Monitor will use to open a connection to the NNTP server.

IP Address / Domain Name
Specify the location of the NNTP server you want to monitor. Both IP Address and Domain Name are valid entries.

Examples of valid Domain names are: www.xyzcompany.com and xyzcompany.com.
An example of a valid IP address is: 10.10.10.5

Note: Entering an IP address will eliminate any variables introduced by performing a lookup on the DNS server. If your network uses a DHCP server to dynamically assign IP addresses, enter an IP address only if it is "reserved"; otherwise, enter a Domain Name.

TCP Port
Specify the Port Number that the NNTP server responds on. By default, the standard Port Number used for NNTP communication (Port 119) is already entered.

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When the Monitor is in an Up state, test results are reported as shown in the example below:

rtt - Round-Trip Time. This value indicates the time it took the test packet to reach the monitored resource and return a response to ipMonitor. Round-trip time is measured in milliseconds (ms).

When the Monitor is in a Warn, Down, or Lost state, the Last Result field indicates the problem encountered. Different Monitor types generate specific Error Codes in accordance with the technical capabilities of the Monitor. Refer to the Error Codes section of this document for details.

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For information on settings common to all Monitor types, such as Identification, Timing, Notification Control and Recovery Parameters, refer to General Monitor Settings.

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The following error codes are generated by the NNTP Monitor. Error codes are displayed in Real-time and Historical Reports. They can also be added to Alerts using Tokens.

Message	Details
Configuration information for this item is missing some required fields	A required element(s) for Monitor connectivity or testing was not supplied to ipMonitor.
Unable to connect to the remote device	The specified address to the connection-based Service is unavailable.
Could not obtain an IP address for the remote device	The supplied address was not a valid IP address OR the Server Domain Name could not be translated into an IP address. The Server Domain Name may refer to a local machine name, or a fully qualified domain name.
The remote device timed out before sending a response	The resource being monitored did not respond within the maximum allowable time.
Unexpected disconnection from the remote device	The server disconnected during the test transaction.
The remote device rejected the request due to an internal error	Upon connecting to the server, an initial message indicating the server is unavailable was received.

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