A telnet to a server

telnet <ip-address> <port-number>
telnet <name-of-the-server> <port-number>

Most of the time peo­ple check con­nec­tiv­ity via

ping <ip-address>

But ping com­mand lis­tens on other ports than you expect. Hence, you might get response back from server but in real­ity when you try to send request to the server you might not get response back.

Hence, tel­net test is more reli­able com­pare to ping test.

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