If the service is already running on specific port we can do the telnet test as like below.
telnet 128.25.65.12 8090
Now if the service is not running how to simulate telnet behavior?. This can be achieved by using 'NC' utility in linux/solaris. To simulate telnet first we need login destination machine and we need to start the system in listening mode as like below.
nc -l 8090
Once destination machine is started in listening mode, We can hit telnet test as mentioned abouve.
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