Configure SSH and User Accounts

Go to global configuration:

Linuxsource-Router> en
Linuxsource-Router# conf t

Set the domain:

Linuxsource-Router(config)# ip domain-name linuxsource.nl

Then create a stong key with 2048 bits:

Linuxsource-Router(config)# crypto key generate rsa

The name for the keys will be: Linuxsource-Router.linuxsource.nl 
Choose the size of the key modulus in the range of 360 to 2048 
for your General Purpose Keys. 

Choosing a key modulus greater than 512 may take   a few minutes. 

How many bits in the modulus [512]: 2048 

% Generating 2048 bit RSA keys, keys will be non-exportable...[OK]

Enable ssh on de the device (do not use the older version 1:

Linuxsource-Router(config)# ip ssh version 2

Then create a local user account with encrypted password!

Linuxsource-Router(config)# username sander secret cisco

For creating a user with an unencrypted password, use:

Linuxsource-Router(config)# username sander password cisco

Allowing telnet and/or ssh to the device:

Linuxsource-Router(config)# line vty 0 15
Linuxsource-Router(config-line)# transport input telnet ssh

Don’t forget to define the login method to use the local user database

Linuxsource-Router(config-line)# login local
Linuxsource-Router(config-line)# end

save the configuration:

Linuxsource-Router(config)# copy running-config startup-config

Done!