Linux Network Administration - SSH and Telnet

The video tutorial explains the two main services in Linux for external connections: Telnet and SSH. Telnet is outdated and insecure, while SSH is secure and widely used. It covers the roles of client and server packages, demonstrating how to use Telnet and SSH, and how to manage the SSHD service. The tutorial emphasizes the importance of SSH for secure connections and provides practical steps for managing SSHD processes to enhance system security.

What is the main reason companies have moved away from using Telnet?

• It is considered insecure.

• It is not compatible with modern hardware.

• It is too slow for current network speeds.

• It is too expensive.

What is the primary role of SSH in Linux?

• To manage file permissions.

• To monitor system performance.

• To establish secure connections between computers.

• To provide a graphical user interface.

Why is Telnet not included by default in Linux installations?

• It is outdated and insecure.

• It is incompatible with most Linux distributions.

• It requires a paid license.

• It is too complex to configure.

What command is used to install Telnet on a Linux system?

• apt-get install telnet

• telnet install

• install telnet

• yum install telnet

How can you verify if the SSHD process is running on a Linux machine?

• By restarting the computer.

• By using the command 'ps -ef | grep sshd'.

• By checking the system logs.

• By opening the SSH configuration file.

What happens if the SSHD process is stopped on a Linux server?

• The server will shut down.

• No new SSH connections can be established.

• All existing connections will be terminated.

• The server will become read-only.

Which command can be used to check the status of the SSHD service?

• check sshd

• service sshd status

• systemctl status sshd

• status sshd