Cisco Systems 3750E manual Displaying the SSH Configuration and Status, Configuring the SSH Server

Chapter 9 Configuring Switch-Based Authentication

Configuring the Switch for Secure Shell

Configuring the SSH Server

Beginning in privileged EXEC mode, follow these steps to configure the SSH server:

	Command	Purpose
Step 1
	configure terminal	Enter global configuration mode.
Step 2
	ip ssh version [1 2]	(Optional) Configure the switch to run SSH Version 1 or SSH Version 2.
		• 1—Configure the switch to run SSH Version 1.
		• 2—Configure the switch to run SSH Version 2.
		If you do not enter this command or do not specify a keyword, the SSH
		server selects the latest SSH version supported by the SSH client. For
		example, if the SSH client supports SSHv1 and SSHv2, the SSH server
		selects SSHv2.
Step 3
	ip ssh {timeout seconds	Configure the SSH control parameters:
	authentication-retries number}	• 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 the version and configuration information for your SSH server.
	or
	show ssh	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.

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 9-3:

	Table 9-3	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.
			Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-02				9-41