LevelOne ProCon GSW-2692 User Manual download pdf (Page 78)

Configuring the Switch

3-42

Configuring the Secure Shell

The Berkley-standard includes remote access tools originally designed for Unix

systems. Some of these tools have also been implemented for Microsoft Windows

and other environments. These tools, including commands such as rlogin (remote

The Secure Shell (SSH) includes server/client applications intended as a secure

replacement for the older Berkley remote access tools. SSH can also provide

remote management access to this switch as a secure replacement for Telnet.

When the client contacts the switch via the SSH protocol, the switch generates a

public-key that the client uses along with a local user name and password for access

authentication. SSH also encrypts all data transfers passing between the switch and

SSH-enabled management station clients, and ensures that data traveling over the

network arrives unaltered.

Note that you need to install an SSH client on the management station to access the

switch for management via the SSH protocol.

Note:

The switch supports both SSH Version 1.5 and 2.0.

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 3-37). 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

51941746772984865468615717739390164779355942303577413098022737087794545

24083971752646358058176716709574804776117

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LevelOne ProCon GSW-2692 User Manual Page 78