SSH and HTTPS
Because Telnet sends all of its packets as plain text, it is not secure. SSH allows remote management of a Cisco router or switch, but unlike Telnet, SSH encrypts the contents of the packets to protect it from being interpreted if they fall into the wrong hands.
To enable SSH on a router or switch, the following items need to be in place:
Hostname other than the default name of router.
Domain name.
Generating a public/private key pair, ...
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