Configuring Secure Shell (SSH)
Further Information on SSH Client Public-Key Authentication
Note on Public The actual content of a public key entry in a public key file is determined by
Keys
the SSH client application generating the key. (Although you can manually add
or edit any comments the client application adds to the end of the key, such
as the smith@support.cairns.com at the end of the key in figure
7-13 on page
7-23.)
Syntax: copy tftp pub-key-file <ip-address> <filename>
Copies a public key file from a TFTP server into flash
memory in the switch.
show crypto client-public-key [babble | fingerprint]
Displays the client public key(s) in the switch’s current
client-public-key file.
The babble option converts the key data to phonetic
hashes that are easier for visual comparisons.
The fingerprint option converts the key data to phonetic
hashes that are for the same purpose.
For example, if you wanted to copy a client public-key file named clientkeys.txt
from a TFTP server at 10.38.252.195 and then display the file contents:
Key Index Number
Figure 7-14. Example of Copying and Displaying a Client Public-Key File Containing Two Different Client
Public Keys for the Same Client
Replacing or Clearing the Public Key File. The client public-key file
remains in the switch’s flash memory even if you erase the startup-config file,
reset the switch, or reboot the switch.
â– You can remove the existing client public-key file or specific keys by
executing the clear crypto public-key command.
7-25
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