Chapter
Security > SSH Settings
Security > SSH Settings
The Secure Shell (SSH) includes server/client applications
that can provide remote management access to the Switch
and act as a secure replacement for Telnet .
When the client contacts the Switch through the SSH
protocol, the Switch generates a public-key that the client
uses 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 .
NOTE:
You need to install an SSH client on the
management station to access the Switch for
management through the SSH protocol . The
Switch supports both SSH Version 1 .5 and 2 .0 .
SSH Server Status
Allows you to enable/disable the SSH
server on the Switch . (Default: Dsabled)
Verson
The Secure Shell version number . Version 2 .0 is
displayed, but the Switch supports management access
via either SSH Version 1 .5 or 2 .0 clients .
SSH Authentcaton Tmeout (1-120)
interval in seconds that the SSH server waits for a response
from a client during an authentication attempt . (Default:
120 seconds)
SSH Authentcaton Retres (1-)
of authentication attempts that a client is allowed before
authentication fails and the client has to restart the
authentication process . (Default: )
24-Port 10/100 + 4-Port Ggabt Swtch wth WebVew and Power over Ethernet
Specifies the time
Specifies the number
Configuring the Switch
SSH Server-Key Sze (12-8)
key size . The server key is a private key that is never shared
outside the Switch . The host key is shared with the SSH
client, and is fixed at 1024 bits . (Default:8)
Security > SSH Host-Key Settings
Security > SSH Host-Key Settings
A host public/private key pair is used to provide secure
communications between an SSH client and the Switch .
After generating this key pair, you must provide the host
public key to SSH clients and import the client's public key
to the Switch .
Publc-Key of Host-Key
The public key for the host .
RSA (Verson 1)
The first field indicates the size of the
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host key (e .g ., 1024), the second field is the encoded
public exponent (e .g ., 65537), and the last string is the
encoded modulus .
DSA (Verson 2)
The first field indicates that the
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encryption method used by SSH is based on the
Digital Signature Standard (DSS) . The last string is the
encoded modulus .
Host-Key Type
The key type used to generate the
host key pair (i .e ., public and private keys) . (Range: RSA
(Version 1), DSA (Version 2), Both: Default: RSA) The SSH
server uses RSA or DSA for key exchange when the client
first establishes a connection with the Switch, and then
negotiates with the client to select either DES (56-bit) or
3DES (168-bit) for data encryption .
Save Host-Key from Memory to Flash
from RAM (volatile memory) to flash memory . Otherwise,
the host key pair is stored to RAM by default . Note that
you must select this item prior to generating the host-key
pair .
Specifies the SSH server
Saves the host key
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