Just did steps for you --one of my test device. hope this information help you. but make sure take precautions if you doing on production system.
CE1#show ip ssh SSH Disabled - version 1.99 %Please create RSA keys to enable SSH (and of atleast 768 bits for SSH v2). Authentication methods:publickey,keyboard-interactive,password Authentication Publickey Algorithms:x509v3-ssh-rsa,ssh-rsa Hostkey Algorithms:x509v3-ssh-rsa,ssh-rsa Encryption Algorithms:aes128-ctr,aes192-ctr,aes256-ctr MAC Algorithms:hmac-sha1,hmac-sha1-96 Authentication timeout: 120 secs; Authentication retries: 3 Minimum expected Diffie Hellman key size : 1024 bits IOS Keys in SECSH format(ssh-rsa, base64 encoded): NONE CE1#config t Enter configuration commands, one per line. End with CNTL/Z.
CE1(config)#ip domain-name bb.com
CE1(config)#username bbandi password bbandi
CE1(config)#crypto key generate rsa The name for the keys will be: CE1.bb.com Choose the size of the key modulus in the range of 360 to 4096 for your General Purpose Keys. Choosing a key modulus greater than 512 may take a few minutes.
How many bits in the modulus [512]: 1024 % Generating 1024 bit RSA keys, keys will be non-exportable... [OK] (elapsed time was 1 seconds)
CE1(config)# %SSH-5-ENABLED: SSH 1.99 has been enabled
CE1(config)#ip ssh version 2
CE1(config)#line vty 0 4
CE1(config-line)#transport input none
CE1(config-line)#transport input ssh CE1(config-line)#end
%SYS-5-CONFIG_I: Configured from console by console
CE1#show ip ssh SSH Enabled - version 2.0 Authentication methods:publickey,keyboard-interactive,password Authentication Publickey Algorithms:x509v3-ssh-rsa,ssh-rsa Hostkey Algorithms:x509v3-ssh-rsa,ssh-rsa Encryption Algorithms:aes128-ctr,aes192-ctr,aes256-ctr MAC Algorithms:hmac-sha1,hmac-sha1-96 Authentication timeout: 120 secs; Authentication retries: 3 Minimum expected Diffie Hellman key size : 1024 bits IOS Keys in SECSH format(ssh-rsa, base64 encoded): CE1.bb.com ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAAAgQC2sle25cmVMxdOs247A7x41eIGBPkZ61ZHr+zCORvh Bdrx4uFdIL9kk+Iu2swZENJHX4E7EfUKnWSW7rYe4btPKORezOhorAojgdPACcliTlSoaG/pCGhBZCrC knlGoRqspnL63oDi8pqGqRNt+MnSfUgaYRm6ecgt+r3H0zmlQw==
... View more
