Restrict telnet access on Ubuntu 16.04.7 LTS using username/password

Ask Ubuntu Asked by flying dutch on December 15, 2020

I have telnet (without creds) enabled on multiple ports on my ubuntu due to an application running on it.
Can you guide me on how to add a username/password for multiple ports listening for telnet .

16.04 telnet

Restrict telnet access on Ubuntu 16.04.7 LTS using username/password

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