8.28 MB - Edge-Core

4
Command Line Interface
Table 4-15 SSH Commands (Continued)
Command Function Mode Page
copy tftp public-key Copies the user’s public key from a TFTP server to the switch PE 4-63
delete public-key Deletes the public key for the specified user PE 4-38
ip ssh crypto host-key Generates the host key PE 4-38
generate
ip ssh crypto zeroize Clear the host key from RAM PE 4-39
ip ssh save host-key Saves the host key from RAM to flash memory PE 4-39
disconnect Terminates a line connection PE 4-18
show ip ssh
Displays the status of the SSH server and the configured values PE 4-40
for authentication timeout and retries
show ssh Displays the status of current SSH sessions PE 4-40
show public-key Shows the public key for the specified user or for the host PE 4-41
show users Shows SSH users, including privilege level and public key type PE 4-60
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 4-68. 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.
To use the SSH server, complete these steps:
1. Generate a Host Key Pair – Use the ip ssh crypto host-key generate
command to create a host public/private key pair.
2. Provide Host Public Key to Clients – Many SSH client programs automatically
import the host public key during the initial connection setup with the switch.
Otherwise, you need to manually create a known hosts file on the management
station and place the host public key in it. An entry for a public key in the known
hosts file would appear similar to the following example:
4-34
10.1.0.54 1024 35 15684995401867669259333946775054617325313674890836547254
15020245593199868544358361651999923329781766065830956 10825913212890233
76546801726272571413428762941301196195566782 59566410486957427888146206
51941746772984865468615717739390164779355942303577413098022737087794545
24083971752646358058176716709574804776117
3. Import Client’s Public Key to the Switch – Use the copy tftp public-key
command to copy a file containing the public key for all the SSH client’s granted
management access to the switch. (Note that these clients must be configured
locally on the switch via the User Accounts page as described on page 3-33.)
The clients are subsequently authenticated using these keys. The current