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294 SSH Commands
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User Guidelines
• If encryption keys are not generated, the SSH server is in standby until the keys are generated.
To generate SSH server keys, use the commands
crypto key generate rsa
, and
crypto key
generate dsa
.
Example
The following example enables the device to be configured from a SSH server.
crypto key generate dsa
The
ip ssh server
Global Configuration mode command generates DSA key pairs.
Syntax
crypto key generate dsa
Default Configuration
DSA key pairs do not exist.
Command Mode
Global Configuration mode
User Guidelines
• DSA keys are generated in pairs: one public DSA key and one private DSA key. If the device
already has DSA keys, a warning and prompt to replace the existing keys with new keys is
displayed.
• This command is not saved in the startup configuration; however, the keys generated by this
command are saved in the FLASH. The SSH keys can be displayed with the
show crypto key
mypubkey dsa
command.
• This command may take a considerable period of time to execute.
• DSA key size is 2048 bits.
Example
The following example generates DSA key pairs.
crypto key generate rsa
The
crypto key generate rsa
Global Configuration mode command generates RSA key pairs.
Console (config)# ip ssh server
Console (config)# crypto key generate dsa