Certificate Authentication

Introduction

• Ubuntu vs Debian vs other Linux distributions
• Overview of Ubuntu features and advantages
• Ubuntu variants or editions

Getting Started

• Understanding the system requirements
• Installing Ubuntu (Basic, Advanced, and Automatic)
• Executing bash shell commands
• Running Ubuntu on cloud images

Configuring Network Devices

• Basic to advanced networking concepts
• Identifying Ethernet interfaces and setting logical names
• Assigning IP addresses and default gateway
• Configuring hostname records
• Bridging multiple interfaces

Securing Systems

• Setting up users and permissions using sudo
• Using the AppArmor module to manage profiles
• Configuring a firewall using ufw and iptables
• Configuring self-signed and CA certificates
• Implementing access controls using LDAP and Samba AD

Managing Virtualization

• Enabling virtualization using qemu/kvm and libvirt
• Using OpenStack to manage virtualization stack
• Creating VMs using multipass, uvt, and virt tools

Managing Containers

• Using LXD and LXC to administer containers
• Creating and starting containers
• Applying profiles and policies to containers
• Publishing, importing, and exporting images

Maintaining Systems

• Implementing high availability clusters
• Monitoring infrastructure workloads
• Setting up and restoring backups

Configuring Mail and Web Servers

• Setting up IMAP and POP3 servers with Dovecot
• Setting up SMTP authentication with Exim4 and Postfix
• Setting up an Apache web server
• Configuring Squid proxy cache server
• Installing MySQL, PHP/Perl/Python, and Ruby on Rails

Troubleshooting

Summary and Next Steps