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DES-3500 Layer 2 Fast Ethernet Switch CLI Reference Manual
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SSH COMMANDS
The steps required to use the Secure Shell (SSH) protocol for secure communication between a remote PC (the SSH Client) and
the Switch (the SSH Server), are as follows:
Create a user account with admin-level access using the create account admin <username> <password> command. This is
identical to creating any other admin-lever user account on the Switch, including specifying a password. This password is used to
login to the Switch, once secure communication has been established using the SSH protocol.
Configure the user account to use a specified authorization method to identify users that are allowed to establish SSH connections
with the Switch using the config ssh authmode command. There are three choices as to the method SSH will use to authorize the
user, and they are password, publickey and hostbased.
Configure the encryption algorithm that SSH will use to encrypt and decrypt messages sent between the SSH Client and the SSH
Server.
Finally, enable SSH on the Switch using the enable ssh command.
After following the above steps, users can configure an SSH Client on the remote PC and manage the Switch using secure, in-
band communication.
The Secure Shell (SSH) commands in the Command Line Interface (CLI) are listed (along with the appropriate parameters) in the
following table.
Command Parameters
enable ssh
disable ssh
config ssh authmode [password | publickey | hostbased] [enable | disable]
show ssh authmode
config ssh server {maxsession <int 1-8> | contimeout <sec 120-600> | authfail <int
2-20> | rekey [10min | 30min | 60min | never] | port
<tcp_port_number 1-65535>
show ssh server
config ssh user <username> authmode [hostbased [hostname <domain_name>
| hostname_IP <domain_name> <ipaddr>] | password |
publickey]
show ssh user authmode
config ssh algorithm [3DES | AES128 | AES192 | AES256 | arcfour | blowfish |
cast128 | twofish128 | twofish192 | twofish256 | MD5 | SHA1 |
RSA | DSA] [enable | disable]
show ssh algorithm
config ssh regenerate hostkey
Each command is listed, in detail, in the following sections.
enable shh
Purpose Used to enable SSH.
Syntax
enable ssh
Description This command allows users to enable SSH on the Switch.
Parameters None.
Restrictions Only Administrator and Operator-level users can issue this
command.
Usage example: