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OMMANDS
22-29
• 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
Related Commands
ip ssh crypto zeroize (22-29)
ip ssh save host-key (22-30)
ip ssh crypto zeroize
This command clears the host key from memory (i.e. RAM).
Syntax
ip ssh crypto zeroize [dsa | rsa]
• dsa – DSA key type.
• rsa – RSA key type.
Default Setting
Clears both the DSA and RSA key.
Command Mode
Privileged Exec
Command Usage
• This command clears the host key from volatile memory (RAM). Use
the no ip ssh save host-key command to clear the host key from flash
memory.
Console#ip ssh crypto host-key generate dsa
Console#
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