April 2018
Intermediate to advanced
138 pages
3h 55m
English
Telnet is a simple but powerful command that can be run to query against particular ports and services on your servers. When trying to determine whether or not a particular service is available, or when trying to troubleshoot some form of network connectivity problem, it is a much more reliable tool than using a simple ping request. If you have been thinking about building some kind of script that programmatically reaches out and checks against servers to report whether they are online or offline, consider using telnet rather than ping so that you can query the individual service that the system is providing by using its particular port number.