While connecting to a Cisco device out-of-band (i.e. not using IP) using aserial connection is the most secure way to configure the device, we also needto be able to connect over the network. Telnet works, but is not secure. So weneed SSH. This posts looks at how to set up SSH with username and password on aCisco device, how to use public-key certificates as a best practice toauthenticate and how to disable SSH altogether if it is not needed. Cisco, of course, has pages upon pages of discussi...
