Chapter 7
| Authentication Commands
Secure Shell
ip ssh crypto host-key
generate
Example
Console#delete public-key admin dsa
Console#
This command generates the host key pair (i.e., public and private).
Syntax
ip ssh crypto host-key generate [dsa | rsa]
dsa – DSA (Version 2) key type.
rsa – RSA (Version 1) key type.
Default Setting
Generates both the DSA and RSA key pairs.
Command Mode
Privileged Exec
Command Usage
◆
The switch uses only RSA Version 1 for SSHv1.5 clients and DSA Version 2 for
SSHv2 clients.
◆
This command stores the host key pair in memory (i.e., RAM). Use the
save host-key
command to save the host key pair to flash memory.
◆
Some SSH client programs automatically add the public key to the known hosts
file as part of the configuration process. Otherwise, you must manually create a
known hosts file and place the host public key in it.
◆
The SSH server uses this host key to negotiate a session key and encryption
method with the client trying to connect to it.
Example
Console#ip ssh crypto host-key generate dsa
Console#
Related Commands
ip ssh crypto zeroize (237)
ip ssh save host-key (237)
– 236 –
ip ssh