Chapter 8
| Authentication Commands
Secure Shell
– 229 –
Command Mode
Global Configuration
Command Usage
◆
The SSH server supports up to eight client sessions. The maximum
number of client sessions includes both current Telnet sessions and SSH
sessions.
◆
The SSH server uses DSA or RSA 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.
◆
You must generate DSA and RSA host keys before enabling the SSH
server.
Example
Console#ip ssh crypto host-key generate dsa
Console#configure
Console(config)#ip ssh server
Console(config)#
Related Commands
ip ssh crypto host-key generate (231)
show ssh (234)
ip ssh server-key size
This command sets the SSH server key size. Use the
no
form to restore the
default setting.
Syntax
ip ssh server-key size
key-size
no ip ssh server-key size
key-size
– The size of server key. (Range: 512-896 bits)
Default Setting
768 bits
Command Mode
Global Configuration
Command Usage
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.
