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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 25-4. 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.
25-15
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.
Table 25-10 Secure Shell Commands
Command
ip ssh server
ip ssh timeout
ip ssh
authentication-retries
ip ssh server-key size
copy tftp public-key
delete public-key
ip ssh crypto host-key
generate
ip ssh crypto zeroize
ip ssh save host-key
disconnect
show ip ssh
show ssh
show public-key
show users
Function
Enables the SSH server on the switch
Specifies the authentication timeout for the SSH server
Specifies the number of retries allowed by a client
Sets the SSH server key size
Copies the user’s public key from a TFTP server to the switch
Deletes the public key for the specified user
Generates the host key
Clear the host key from RAM
Saves the host key from RAM to flash memory
Terminates a line connection
Displays the status of the SSH server and the configured values
for authentication timeout and retries
Displays the status of current SSH sessions
Shows the public key for the specified user or for the host
Shows SSH users, including privilege level and public key type
Mode Page
GC 25-17
GC 25-18
GC 25-19
GC 25-19
PE 23-11
PE 25-20
PE 25-20
PE 25-21
PE 25-21
PE 23-24
PE 25-22
PE 25-22
PE 25-23
PE 23-8
Secure She l
25