Telnet service
The Telnet service checks the status of the telnet port on the network device. The Telnet protocol is designed for terminal-oriented remote login sessions.
N-able N-central can determine the up or down status of the Telnet service. The Telnet service does not use the Warning state. N-able N-central averages the availability of the Telnet service over the scan interval. It compares the availability of the Telnet service to the threshold to determine the status.
| Service Type | TCP |
| Instances on a Device | 1 |
| Device Class | Server - Generic, Workstation - Generic, Other, Printer, Scanner/Camera, Switch/Router, Laptop - Windows, Server - Windows, and Workstation - Windows |
| Monitored By | Windows probe, N-able N-central Server |
| Scan Interval | 5 minutes |
| Timeout Value | The time (in seconds) that the N-able N-central server waits before considering the test a failure. The default is 30 seconds. |
| Port Number | 23 |
Status details
| Status Detail | Description |
|---|---|
| Telnet Service Availability | N-able N-central determines whether the Telnet service is up or down. The Telnet service does not use the Warning state. N-able N-central averages the availability of the Telnet service over the scan interval and compares the availability of the Telnet service to the threshold to determine the status. |
| Round Trip Time (ms) | The time for a request to be sent and received. |
| DNS Resolution | The threshold that determines whether the device name can be resolved. If an FQDN has been specified, the service searches for its IP address. If the IP address is found, the state will be Normal. Otherwise, it will be Failed, based on the default settings. If an IP address has been specified, the service checks only the IP address's format. If the format is correct, the state will be Normal. Otherwise, it will be Failed, based on the default settings. |