Digisol DG-FS4526E, Management Manual

Page: 305 / 1162

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14 | Security Measures
Configuring the Secure Shell
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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
remote authentication server, as specified on the System
Authentication page ( page 273 ). 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
59566410486957427888146206519417467729848654686157177393901647
79355942303577413098022737087794545240839717526463580581767167
09574804776117
3. Import Client’s Public Key to the Switch – See "Importing User Public
Keys" on page 310 , or use the copy tftp public-key command
( page 591 ) 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 287 .) 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
13410816856098939210409449201554253476316419218729589211431738
80055536161631051775940838686311092912322268285192543746031009
37187721199696317813662774141689851320491172048303392543241016
37997592371449011938006090253948408482717819437228840253311595
2134861022902978982721353267131629432532818915045306393916643
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.