Installation manual

3-80
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Notes: 1. You need to install an SSH client on the management station to access the switch
for management via the SSH protocol.
2. The switch supports both SSH Version 1.5 and 2.0 clients.
Command Usage
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 on the Authentication Settings page (page 3-58). 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 (SSH Host Key Settings) and enable the SSH server
(Authentication Settings).
To use the SSH server, complete these steps:
1. Generate a Host Key Pair – On the SSH Host Key Settings page, 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:
10.1.0.54 1024 35 15684995401867669259333946775054617325313674890836547254
15020245593199868544358361651999923329781766065830956 10825913212890233
76546801726272571413428762941301196195566782 59566410486957427888146206
51941746772984865468615717739390164779355942303577413098022737087794545240839
71752646358058176716709574804776117
3. Import Client’s Public Key to the Switch – Use the copy tftp public-key command
(page 4-36) 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 3-56.) The clients are
subsequently authenticated using these keys. The current firmware only accepts
public key files based on standard UNIX format as shown in the following example for
an RSA Version 1 key:
1024 35 1341081685609893921040944920155425347631641921872958921143173880
05553616163105177594083868631109291232226828519254374603100937187721199696317
81366277414168985132049117204830339254324101637997592371449011938006090253948
40848271781943722884025331159521348610229029789827213532671316294325328189150
45306393916643 steve@192.168.1.19
4. Set the Optional Parameters – On the SSH Settings page, configure the optional
parameters, including the authentication timeout, the number of retries, and the server
key size.