Linksys SRW224G4P - Manual (Page 34)

Chapter  Configuring the Switch
0 24-Port 10/100 + 4-Port Ggabt Swtch wth WebVew and Power over Ethernet
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) Specifies the time
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-) Specifies the number
of authentication attempts that a client is allowed before
authentication fails and the client has to restart the
authentication process . (Default: )
SSH Server-Key Sze (12-8) Specifies the SSH server
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
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
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 Saves the host key
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 .
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