LevelOne GSW-2692 manual Secure Shell Commands, Ip telnet port, SSH Commands Function Mode

4 Command Line Interface

Related Commands

ip telnet port (4-33)

Secure Shell Commands

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 login), rsh (remote shell), and rcp (remote copy), are not secure from hostile attacks.

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 a client contacts the switch via the SSH protocol, the switch uses a public-key that the client must match 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.

This section describes the commands used to configure the SSH server. However, note that you also need to install a SSH client on the management station when using this protocol to configure the switch.

Note: The switch supports both SSH Version 1.5 and 2.0.

Table 4-15 SSH Commands

Command	Function	Mode	Page
ip ssh server	Enables the SSH server on the switch	GC	4-36
ip ssh timeout	Specifies the authentication timeout for the SSH server	GC	4-37
ip ssh	Specifies the number of retries allowed by a client	GC	4-37
authentication-retries
ip ssh server-key size	Sets the SSH server key size	GC	4-38
copy tftp public-key	Copies the user’s public key from a TFTP server to the switch	PE	4-65
delete public-key	Deletes the public key for the specified user	PE	4-38
ip ssh crypto host-key	Generates the host key	PE	4-39
generate
ip ssh crypto zeroize	Clear the host key from RAM	PE	4-39
ip ssh save host-key	Saves the host key from RAM to flash memory	PE	4-40
disconnect	Terminates a line connection	PE	4-18
show ip ssh	Displays the status of the SSH server and the configured values	PE	4-40
	for authentication timeout and retries
show ssh	Displays the status of current SSH sessions	PE	4-41
show public-key	Shows the public key for the specified user or for the host	PE	4-42
show users	Shows SSH users, including privilege level and public key type	PE	4-62

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