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Cisco Catalyst C9300-24T : Encryption & Cipher Support

RS19
Level 4
Level 4

Below is the output from Cisco Catalyst C9300 for command show run all | in ssh
Currently it has the below configuration. 
ip ssh client algorithm kex diffie-hellman-group-exchange-sha1 diffie-hellman-group14-sha1
ip ssh server algorithm kex diffie-hellman-group-exchange-sha1 diffie-hellman-group14-sha1

In addition to the above is it possible to add the below. I dont want to replace the above. Can the below commands co-exists ? Will it work ? Pls let me know

ip ssh client algorithm kex diffie-hellman-group-exchange-sha256 diffie-hellman-group14-sha256
ip ssh server algorithm kex diffie-hellman-group-exchange-sha256 diffie-hellman-group14-sha256
----------------------------------------------------------------------------------
show run all | in ssh
netconf-yang ssh port 830
ip ssh time-out 120
ip ssh authentication-retries 3
ip ssh window-size 8192
ip ssh break-string ~break
ip ssh version 2
ip ssh dh min size 2048
no ip ssh rekey time
no ip ssh rekey volume
ip ssh server authenticate user publickey
ip ssh server authenticate user keyboard
ip ssh server authenticate user password
no ip ssh server peruser session limit
ip ssh server certificate profile
ip ssh server algorithm mac hmac-sha2-256 hmac-sha2-512 hmac-sha1 hmac-sha1-96
ip ssh server algorithm encryption aes128-ctr aes192-ctr aes256-ctr
ip ssh server algorithm kex diffie-hellman-group-exchange-sha1 diffie-hellman-group14-sha1
ip ssh server algorithm hostkey x509v3-ssh-rsa ssh-rsa
ip ssh server algorithm authentication publickey keyboard password
ip ssh server algorithm publickey x509v3-ssh-rsa ssh-rsa
ip ssh client algorithm mac hmac-sha2-256 hmac-sha2-512 hmac-sha1 hmac-sha1-96
ip ssh client algorithm encryption aes128-ctr aes192-ctr aes256-ctr
ip ssh client algorithm kex diffie-hellman-group-exchange-sha1 diffie-hellman-group14-sha1
transport input ssh

16 Replies 16

I believe that too.
Regards, LG
*** Please Rate All Helpful Responses ***

Can you please check  and confirm if the below will be supporte or not ?

  • curve25519-sha256
  • curve25519-sha256@libssh.org
  • ecdh-sha2-nistp256
  • ecdh-sha2-nistp384
  • ecdh-sha2-nistp521
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