Just a quick note about configuring SSH on a Cisco Catalyst 4900M Switch:
Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-ENTSERVICESK9-M), Version 12.2(54)SG, RELEASE SOFTWARE (fc3) # conf t (config)#crypto key zeroize rsa % No Signature RSA Keys found in configuration. (config)# crypto key generate rsa general-keys label ssh modulus 1024 The name for the keys will be: ssh % The key modulus size is 1024 bits % Generating 1024 bit RSA keys, keys will be non-exportable...[OK] (config)# ip ssh authentication-retries 5 (config)# ip ssh version 2 (config)# line vty 0 4 (config)# transport input ssh telnet
Note: You can leave the “telnet” off vty transport, but if you do ensure that you’ve tested SSH first!