Remote access with SSH in Raspberry Pi - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does SSH stand for and what is its main purpose?

SSH stands for Secure Shell. It is used to securely connect to another computer over a network, allowing you to control it remotely.

beginner

Which command do you use on your computer to connect to a Raspberry Pi via SSH?

You use the command ssh username@ip_address, where username is the Raspberry Pi user and ip_address is its network address.

beginner

Why is it important to change the default password on your Raspberry Pi before using SSH?

Changing the default password helps protect your Raspberry Pi from unauthorized access, since SSH allows remote control and the default password is widely known.

intermediate

What is the role of the SSH key pair in remote access?

An SSH key pair consists of a private key (kept secret) and a public key (shared with the Raspberry Pi). It allows secure login without typing a password each time.

beginner

How can you find the IP address of your Raspberry Pi on your local network?

You can use the command hostname -I on the Raspberry Pi or check your router's connected devices list to find its IP address.

What is the default port number used by SSH?

A 22

B 80

C 443

D 21

SSH uses port 22 by default to establish secure connections.

Which of these commands initiates an SSH connection to a Raspberry Pi with IP 192.168.1.10 and username 'pi'?

A ssh 192.168.1.10 pi

B connect pi 192.168.1.10

C ssh pi@192.168.1.10

D remote pi@192.168.1.10

The correct syntax is ssh username@ip_address.

Why should you avoid using the default 'pi' user password when using SSH?

A It is slow to type

B It causes connection errors

C It disables SSH

D It is well-known and can be a security risk

Default passwords are widely known and can let attackers access your Raspberry Pi.

What does the command ssh-keygen do?

A Connects to a remote SSH server

B Generates a new SSH key pair

C Changes the SSH port

D Lists connected SSH clients

ssh-keygen creates a new pair of SSH keys for secure login.

If you cannot connect to your Raspberry Pi via SSH, what is a common first step to troubleshoot?

A Check if SSH is enabled on the Raspberry Pi

B Restart your computer

C Change your computer's IP address

D Unplug the Raspberry Pi

SSH must be enabled on the Raspberry Pi to accept remote connections.

Explain how you would securely connect to a Raspberry Pi using SSH from your computer.

Think about the command you type and what needs to be set up on the Raspberry Pi.

Describe the benefits of using SSH key pairs instead of passwords for remote access.

Consider how keys improve safety and convenience.