UbuntuHow to Use Ubuntu apparmor to Enforce Mandatory Access Control Profiles
The Failure of Discretionary Access In standard Linux security, permissions are governed by Discretionary Access...
UbuntuHow to Use Ubuntu ss Command to Analyze Active Network Socket Statistics
The Deprecation of netstat For twenty years, Linux network engineers relied entirely on the netstat...
UbuntuHow to Use Ubuntu auditd to Configure Forensic File System Monitoring
The Blindness of Traditional Logging When an Ubuntu server is compromised by an insider threat,...
UbuntuHow to Use Ubuntu parted to Align Disk Sectors and Expand GPT Partitions
The 2 Terabyte Limit For decades, Linux hard drives were formatted using the Master Boot...
UbuntuHow to Use Ubuntu multipathd to Configure SAN Storage Redundancy
The Single Point of Failure In a true enterprise data center, Linux servers do not...
UbuntuHow to Use Ubuntu lvm to Configure Logical Volume Management and Dynamic Resizing
The Rigidity of Static Partitions When you install Ubuntu Server using the standard, default partition...
UbuntuHow to Use Ubuntu apparmor_parser to Compile and Enforce Kernel Security Profiles
The Vulnerability of Sudo In standard Linux environments, security is binary: a user is either...
UbuntuHow to Use Ubuntu netplan to Configure Advanced Virtual LAN (VLAN) Interfaces
The Physical Cabling Bottleneck In traditional enterprise networks, separating traffic for security reasons required physical...
UbuntuHow to Use Ubuntu auditd to Configure Advanced Kernel-Level System Auditing
The Limitations of Syslog When investigating a security breach on an Ubuntu server, administrators typically...
UbuntuHow to Use Ubuntu lxc Command to Manage Unprivileged Linux Containers
The Docker Alternative Docker is the undisputed king of application containerization. It is designed to...
UbuntuHow to Use Ubuntu fapolicyd to Enforce Application Whitelisting and Block Malware
The Antivirus Illusion on Linux A common misconception in the IT industry is that Linux...
UbuntuHow to Use Ubuntu ZFS Snapshots to Instantly Roll Back Server State
The Danger of System Upgrades Every Ubuntu system administrator dreads running sudo apt upgrade on...
UbuntuHow to Use Ubuntu multipathd to Configure SAN Storage High Availability
The Storage Redundancy Challenge In enterprise Linux deployments, physical servers rarely store their databases or...
UbuntuHow to Use Ubuntu sysstat to Generate Historical Performance Analytics
The Blind Spot of Real-Time Monitoring When an Ubuntu server crashes at 3:00 AM and...
UbuntuHow to Use Ubuntu fail2ban to Configure Dynamic IP Blacklisting with UFW
The Brute Force Problem If you provision a brand new Ubuntu server on AWS or...
UbuntuHow to Use Ubuntu cgroups (Control Groups) to Hard Limit Application CPU and RAM Usage
The Resource Contention Problem A standard Ubuntu server operates under a generally democratic resource allocation...
UbuntuHow to Use Ubuntu LVM Thin Provisioning to Optimize Massive Storage Pools
The Problem with Thick Provisioning In standard Linux server deployments, administrators format hard drives using...