Follow this quick tutorial to enable SSH access instead of Telnet and create a unprivileged user on Cisco IOS.
1. Enter in “Privilege EXEC” mode :
enable
2. Enter in “Global Configuration” mode :
conf t
3. Use the following commands to enable SSH, generate RSA keys and create the username/password :
hostname <HOSTNAME> domain-name <FQDN.DOMAIN.TLD> ip ssh time-out 90 ip ssh authentication-retries 3 line vty 0 4 transport input ssh crypto key generase rsa modulus 1024 aaa new-model username <USERNAME> password <PASSWORD>
4. Write changes to memory :
wr mem