System Management Commands
4-35
4
Related Commands
ip telnet port (4-34)
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
4-37
ip ssh timeout
Specifies the authentication timeout for the SSH server
GC
4-38
ip ssh
authentication-retries
Specifies the number of retries allowed by a client
GC
4-38
ip ssh server-key size Sets the SSH server key size
GC
4-39
copy tftp public-key
Copies the user’s public key from a TFTP server to the switch PE
4-70
delete public-key
Deletes the public key for the specified user
PE
4-39
ip ssh crypto host-key
generate
Generates the host key
PE
4-40
ip ssh crypto zeroize
Clear the host key from RAM
PE
4-40
ip ssh save host-key
Saves the host key from RAM to flash memory
PE
4-41
disconnect
Terminates a line connection
PE
4-19
show ip ssh
Displays the status of the SSH server and the configured values
for authentication timeout and retries
PE
4-41
show ssh
Displays the status of current SSH sessions
PE
4-42
show public-key
Shows the public key for the specified user or for the host
PE
4-43
show users
Shows SSH users, including privilege level and public key type PE
4-67
Summary of Contents for 24/48 10/100 Ports + 2GE
Page 2: ......
Page 4: ...ES3526XA ES3552XA F2 2 6 3 E122006 CS R02 149100005500H...
Page 18: ...Contents xiv...
Page 22: ...Tables xviii...
Page 26: ...Figures xxii...
Page 34: ...Introduction 1 8 1...
Page 44: ...Initial Configuration 2 10 2...
Page 242: ...Configuring the Switch 3 198 3...
Page 498: ...Software Specifications A 4 A...
Page 511: ......
Page 512: ...ES3526XA ES3552XA E122006 CS R02D 149100005500H...
