Cisco 2970 - Catalyst Switch Especificaciones descargar pdf (Pagina 187)

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Catalyst 2970 Switch Software Configuration Guide

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Chapter 7 Configuring Switch-Based Authentication

Configuring the Switch for Secure Shell

To return to the default SSH control parameters, use the no ip ssh {timeout | authentication-retries}

global configuration command.

Displaying the SSH Configuration and Status

To display the SSH server configuration and status, use one or more of the privileged EXEC commands

in Table 7-3:

For more information about these commands, refer to the “Secure Shell Commands” section in the

“Other Security Features” chapter of the Cisco IOS Security Command Reference, Cisco IOS

Release 12.2, at this URL:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fsecur_r/fothercr/

srfssh.htm.

Step 3

ip ssh {timeout seconds |

authentication-retries number}

Configure the SSH control parameters:

• Specify the time-out value in seconds; the default is 120 seconds. The

range is 0 to 120 seconds. This parameter applies to the SSH

negotiation phase. After the connection is established, the switch uses

the default time-out values of the CLI-based sessions.

By default, up to five simultaneous, encrypted SSH connections for

multiple CLI-based sessions over the network are available (session 0

to session 4). After the execution shell starts, the CLI-based session

time-out value returns to the default of 10 minutes.

• Specify the number of times that a client can re-authenticate to the

server. The default is 3; the range is 0 to 5.

Repeat this step when configuring both parameters.

Step 4

end Return to privileged EXEC mode.

Step 5

show ip ssh

show ssh

Show the version and configuration information for your SSH server.

Show the status of the SSH server connections on the switch.

Step 6

copy running-config startup-config (Optional) Save your entries in the configuration file.

Command Purpose

Table 7-3 Commands for Displaying the SSH Server Configuration and Status

Command Purpose

show ip ssh Shows the version and configuration information for the SSH server.

show ssh Shows the status of the SSH server.

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