Dell Networking N4000 Series Configuration Manual page 219

The crypto key pubkey-chain ssh command sets SSH to use a public key for
the specified administrator login. The user login is specified by the username
command, not the ias-user command.
The key-string command enters the public key obtained from a key authority
or from a tool such as PuTTyGen. This command is entered as a single line,
not as four lines as it appears in the text above.
The line ssh command sets the line method to SSH.
The login authentication command configures the authentication method to
the defaultList. The defaultList contains a single method — none — which is
equivalent to no authentication. Since the authentication is provided by the
public key, a second layer of authentication is not required.
The last three lines enable the SSH server, configure it to use public key
authentication, and specify use of the SSH-2 protocol.
The following shows the configured authentication methods:
console(config)#show authentication methods
Login Authentication Method Lists
---------------------------------
defaultList
networkList
NOAUTH
Enable Authentication Method Lists
----------------------------------
enableList
enableNetList
NOAUTH
Line Login Method List
------- -----------------
Console defaultList
Telnet networkList
SSH defaultList
HTTPS
HTTP
DOT1X
Configuring Authentication, Authorization, and Accounting
: none
: local
: line
: enable
: enable
: line
:local
:local
:
none
Enable Method List
------------------
enableList
enableList
enableList
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