CLI Reference Guide-R07

Chapter 8 | Authentication Commands
Secure Shell
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Example
Console#delete public-key admin
Console#
ip ssh crypto
host-key generate
This command generates the host key pair (i.e., public and private).
Syntax
ip ssh crypto host-key generate
Default Setting
Generates the RSA key pairs.
Command Mode
Privileged Exec
Command Usage
◆ The switch uses 2048-bit RSA for SSHv2 clients.
◆ This command stores the host key pair in memory (i.e., RAM). Use the ip ssh
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
Console#
Related Commands
ip ssh crypto zeroize (249)
ip ssh save host-key (250)
ip ssh crypto zeroize This command clears the host key from memory (i.e. RAM).
Syntax
ip ssh crypto zeroize
Default Setting
Clears the RSA key.