Linux Crash Course for Beginners - 2023 - Troubleshooting Putty Connection

This video tutorial addresses common issues faced when connecting to a Linux VM using Putty. It covers troubleshooting steps such as configuring NIC settings in Oracle VirtualBox, checking network interfaces, and ensuring the SSH daemon is running. The tutorial provides detailed instructions on setting up host-only and bridged adapters, as well as verifying network configurations to establish a successful connection.

What is one of the primary issues when connecting to Linux via Putty?

• Linux OS not installed

• Incorrect password

• NIC setting on Oracle VirtualBox

• Outdated Putty version

In Oracle VirtualBox, what should be checked to ensure network connectivity?

• Enable network adapter

• Disable firewall

• Update VirtualBox

• Change display settings

What command can be used to check the network interface status?

• ping

• ls -l

• netstat

• ifconfig

What command is used to restart the network service?

• systemctl restart network.service

• service network restart

• network restart

• restart network

What should you do if you don't have an IP address after configuring NIC settings?

• Reinstall VirtualBox

• Reboot the Linux machine

• Restart the network service

• Change the adapter type

What is the difference between 'host only adapter' and 'bridged adapter'?

• Host only adapter restricts internet access

• Both allow internet access

• Bridged adapter restricts internet access

• Host only adapter allows internet access

Which adapter type should be selected for wireless connectivity in VirtualBox?

• Ethernet

• Host only adapter

• None

• Bridged adapter

What should be verified if the SSH daemon is not running?

• Check firewall settings

• Restart the SSH service

• Reinstall Linux

• Update Putty

Which command helps verify if the SSH daemon is active?

• check ssh

• ssh -status

• ps -ef | grep ssh

• ssh -verify

What is the purpose of the 'systemctl' command in this context?

• To update the Linux OS

• To restart network services

• To install new software

• To shut down the system