CCNA 01 — Device access & IOS CLI
Set a hostname, secure privileged mode, configure SSH for remote access, and read the running config — the first things you do on any Cisco device.
Name the device
On R1, enter global config and set the hostname to R1. The prompt should change to R1(config)#. What word now appears before # in the prompt?
Secure privileged EXEC
Protect privileged mode with an encrypted secret: enable secret infotics123. Run show run | include enable — does it show a hash rather than clear text? Type the keyword that appears after enable.
Set the management IP
Give R1 Gi0/0 the address 10.0.0.1/24 and bring it up (no shutdown). Run show ip interface brief — what is the Status of GigabitEthernet0/0 once it is up?
Enable SSH
Configure SSH: set ip domain-name infotics.lab, generate RSA keys (crypto key generate rsa, 1024+ bits), make a user admin secret ..., and on the VTY lines set login local + transport input ssh. Run show ip ssh — what SSH version number does it report?
Why a secret, not a password?
Why do we use enable secret instead of enable password on production devices?