Secure Shell Commands
21-15
21
Secure Shell Commands
This section describes the commands used to configure the SSH server. Note that
you also need to install a SSH client on the management station when using this
protocol to configure the switch.
Note:
The switch supports both SSH Version 1.5 and 2.0 clients.
Configuration Guidelines
The SSH server on this switch supports both password and public key
authentication. If password authentication is specified by the SSH client, then the
password can be authenticated either locally or via a RADIUS or TACACS+ remote
authentication server, as specified by the authentication login command on
page 21-4. If public key authentication is specified by the client, then you must
configure authentication keys on both the client and the switch as described in the
following section. Note that regardless of whether you use public key or password
authentication, you still have to generate authentication keys on the switch and
enable the SSH server.
Table 21-10 Secure Shell Commands
Command Function Mode Page
ip ssh server Enables the SSH server on the switch GC 21-17
ip ssh timeout Specifies the authentication timeout for the SSH server GC 21-18
ip ssh
authentication-retries
Specifies the number of retries allowed by a client GC 21-19
ip ssh server-key size Sets the SSH server key size GC 21-19
copy tftp public-key Copies the user’s public key from a TFTP server to the switch PE 19-13
delete public-key Deletes the public key for the specified user PE 21-20
ip ssh crypto host-key
generate
Generates the host key PE 21-20
ip ssh crypto zeroize Clear the host key from RAM PE 21-21
ip ssh save host-key Saves the host key from RAM to flash memory PE 21-21
disconnect Terminates a line connection PE 19-26
show ip ssh Displays the status of the SSH server and the configured values
for authentication timeout and retries
PE 21-22
show ssh Displays the status of current SSH sessions PE 21-22
show public-key Shows the public key for the specified user or for the host PE 21-23
show users Shows SSH users, including privilege level and public key type PE 19-7
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