zsync

• Discuss Features
• Prep Content
• Compression
• File Names

‘7Zip’

• Features
• Archive Creation
• Inclusions | Exclusions
• FQ Paths
• Content Deletion | Extractions
• Content Exchange
• ‘tar’ with 7z
• Passwords
• Hashes
• Various Formats

‘find’

• Features
• NULL Separators
• Tests
• Negation
• [GU]ID
• Count Types
• Depth
• Actions
• SymLinks
• Times
• Content Types

JournalCTL

• Features
• Persistent | Volatile
• General Usage
• Boot LOGs
• ‘jouralctl’
• Date-Time Ranges
• Output Formats
• Timezone Shifts
• LOG Groups
• Journal Size
• Backup

Ubuntu 22x Administration

• Upgrades | Installations
  • Identify current configuration
  • Discuss new features
  • Snapshot current configuration
  • Upgrade instance online
  • Confirm upgraded environment
  • Perform Installations
  • SUDO Retrofit
  • Automatic Updates
•  

• SHELL Commands | Essentials
  • tty, pts, ll, la, l, ls, find
  • alias, cat, file, chmod, chown, history, dd, blkid
  • IO, Pipes, Redirection, Command Chaining
  • ps, top, /proc, /sys
  • head, tail, sudo, su
  • w, who, whoami, which, whereis
  • Static IPs Set
  • Duplicate VM - Retrofit
•  

• Common Network Clients
  • Identify important client utilities
  • Networking: ping, netstat, mtr, telnet
  • File Retrieval: wget, curl
  • Name Resolvers: host, dig, /etc/hosts
•  

• OpenSSH | Parallel SSH
  • Identify Defaults
  • Discuss TTYs
  • Generate SSH PKI Usage Keys
  • Ensure Password-less AUTH
  • Non-interactively transport content with SCP
  • Interactively move content with SFTP
  • Install Parallel SSH clients
  • Carry out parallel executions
•  

• File Permissions | User Management
  • Explain standard Linux (DAC) permissions
  • Alter permissions as needed
  • Test access to content
  • SET[GU]ID Exploration
  • Discuss Stickyness
  • Discuss Symbolic Links
  • Implement Soft | Hard Links
  • Examine behavior
•  

• User | Group Management
  • Identify GUI | $SHELL User Management tools
  • Explore: /etc/{passwd,shadow,group}
  • Provision users | groups as needed
  • Test functionality
  • Modify accounts | groups as desired
  • Confirm configuration
•  

• Storage Management
  • Explore current storage configuration
  • Provision additional storage as needed
  • Online Resize as desirable
  • Mount | Test | Committ to: /etc/fstab
  • Sync live content area
  • Identify current SWAP environment
  • Allocate SWAP as needed
  • Enable | Committ to: /etc/fstab
  • Logical Volume Management (LVM)
  • Identify default configuration
  • Provision LVM-dedicated storage
  • Configure: PVs | VGs | LVs
  • Extend storage as needed
  • Reduce VG as needed
  • Evaluate results
•  

• Apt | Snap Packages
  • Explore package footprint
  • Peruse configuration
  • Manage packages via 'apt'
  • Discuss Snap Uni Packages
  • Manage packages with 'snap'
  • Confirm configuration
•  

• Cron Scheduler
  • Explore default configuration
  • Discuss scheduling parameters
  • Write simple $HELL script
  • Schedule execution via Cron
  • Alter schedule as desired
  • Confirm expected behavior
•  

• SYSLOG | LOG Rotation
  • Explore default configuration
  • Discuss Syslog Rules
  • Except facilities from catchall: /var/log/syslog
  • Explore key logs
  • Explore LOG Rotation
•  

• NginX
  • Install
  • Verify
  • Explore Configuration
  • PHP Support
  • PPA Upgrade
•  

• SystemD Environment
  • Discuss Features
  • Expose managed resources
  • Manage Services
  • Journal Control
  • Hostname Control
•  

• SSH Tunneling
  • Pseudo-VPN Services
  • Contrast with VPNs
  • Create | Use Forward tunnels
  • Establish Reverse Tunnels
•  

• TCPDump Packets
  • Explore 'tcpdump' basics
  • Capture wide variety of packets
  • Use BPFs to reduce captured data
  • Replay captures with 'tcpdump'
  • Parse with BPFs as desired
•  

• GNU Privacy Guard (GPG)
  • Provision Usage Keys
  • Share Keys
  • (De|En)crypt Content
  • Sign and Verify Content
•  

• Network Reconnaissance
  • Install NMap
  • Explore footprint
  • Perform local reconnaissance
  • Quickly identify available subnet-based nodes
  • Comprehensive scan of select targets
  • Explore scripts interface and discuss
  • Evaluate results
•  

• SSH Guard
  • Install SSHGuard
  • Discuss Features
  • Generate SSH Traffic
  • Evaluate results
•  

Debian 11x Administration

Installations

• Features
• Download
• Network ISO Image
• Full ISO Image

$SHELL BASICS

• Explore usage of the following useful commands
• tty | /dev/pts | w | whoami | who
• set | env | export | unset
• cat | echo | touch | rm
• pwd | ls | cd | mkdir | alias | umask
• head | tail
• dd
• find
• history
• STDIN, STDOUT, STDERR, UNIX Pipes, Redirection, Command Chaining
• ps, df, free, top, dd
• stat, which, w, who
• tar | gzip | bzip2 | xz | 7-Zip

Secure Communications

• Explore SSH defaults
• Use SSH to connect to targets
• Transfer data with: scp | sftp | rsync | parallel-ssh | parallel-rsync
• Mirror PKI Identities | Confirm Functionality

Files | Permissions

• Explain common Linux file permissions
• chmod | chgrp | chown
• Discuss various Linux file attributes | features
• SETUID | SETGID | STICKY Bit
• SymLinks: Hard | Soft

User Management

• Features
• useradd | adduser | usermod | userdel
• groupadd | groupmod | groupdel
• Create $USERs in Parallel
• $USER Passwords | mkpasswd | python3
• Generate Random Passwords
• Store Randomly-generated Passwords for Reference

Storage Management

• Features
• Installation Defaults: File System Table
• Provision Storage
• GPT Label | Create Partition(s) | File System | Mount | Persistence
• XFS - Repurpose Partition(s) for XFS
• Migrate Partition with Backup
• Duplicate Drives
• Online Resizing (Up-Sizing)
• Provision SWAP
• Logical Volume Management (LVM)
• LVM Features
• Allocate Storage to LVM
• LVM Resizing
• LVM SWAP

Cron | SystemD | Logs | Rotation

• Cron Features
• Cron Job Execution
• SYSLOG Features & configuration
• TCP Log Replication
• LOG Rotation configuration
• SystemD Features
• Journal Control Features

Package Management

• Explore default APT configuration
• Identify commonly-used package management tools
• Enumerate installed packages
• Identify package owners based on system binaries
• Discuss 'apt' and 'dpkg' options
• Install | Remove various packages

Networking

• Network Tools | IP Configuration
• Examine default IP configuration
• Extend IP configuration to facilitate additional addresses
• Static IP Config
• Dual: Dynamic | Static Config
• Confirm communications
• Extend multiple addresses on various Instances

BIND | DNS

• Install
• Features
• Caching-Only
• Primary | Secondary | Reverse Zones
• Restrict Transfers

SFTP-Only Access

• Features
• Restrict $USER to SFTP Access
• Confirm limited $SHELL
• SFTP-Only Group
• SFTP-Only Password AUTH

NMap Reconnaissance

• Identifiy key NMAP configuration files
• Identify commonly used NMAP options/switches/parameters
• Scan Server resource
• Perform default TCP Connect-based ethical scans of local and remote resources

argV

• Features
• $SHELL Basics
• $SHELL Functions
• Perl Arguments
• Python Arguments
• PHP Arguments
• xargs

WhiteSpace

• Discuss Features
• CLI ARGs
• echo
• cat | for
• Blanks Lines
• Leading Space
• Trailing Space
• Remove Spaces
• Substitute Spaces
• Normalize Delimiters
• Record Separators
• NULL Separators
• File Names
• Fix Spaces

ZFS Administration

• Discuss Features
• Extend Default Pool
• Projects Pool
• User FS
• Quotas
• Compression
• Snapshots
• Clones
• Mirroring
• RAIDZ
• Replication

FreeBSD Unix Version 13x

• Introduction | Features | Installations
  • Discuss BSD features
  • Identify and obtain installation images
  • Install
  • Evaluate results
•  

• Unix Basics | Users | Groups | Permissions - Symlinks
  • Z-SHELL
  • Compression Utilities
  • Explore User | Group management with BSD Tools
  • Provision users | groups as needed
  • Explore standard Unix File System Permissions
  • Apply common permissions to file objects
  • Test accessibility and debug accordingly
  • Discuss Symbolic Links
  • Implement Soft Links as needed
  • Confirm Soft Link behaviour | limitations
  • Implement Hard Links as needed
  • Contrast Hard | Soft Links
  • Consider applicability of various linking mechanisms
•  

• Package Management - Ports | Packages | Updates
  • Discuss available package management options
  • Explain Ports applications
  • Peruse Ports environment
  • Synchronize Ports tree to Online Repository
  • Explore 'pkg' binary package management system
  • Install binary packages as needed
  • Install Ports and confirm accordingly
•  

• Storage Management - GPART | GrowFS | SWAP
  • Explore default partition layout
  • SWAP Management
  • ZFS Administration Intro
•  

• Services | Cron | Syslog | LOG Rotation
  • Services
  • Cron
  • Discuss available facilities
  • Explore standard Syslog configuration
  • Consolidate Syslogs across target BSD instances
  • Log Rotation
•  
•  

• IP Configuration and Management
  • Discuss available facilities
  • Explore default per-installation configuration
  • Oscillate between static and dynamic configurations
  • Provision multiple IP addresses across hosts
  • Split Back-End
  • Evaluate results
•  

• Web Services
  • NginX
  • SSL | TLS
•  

• Network Reconnaissance with NMap
  • Install NMap
  • Explore top-level container
  • Identify commonly used NMAP options/switches/parameters
  • Carry-out NMap Scans
  • Alternate scans with TCP-Connect to improve performance
  • Contrast scan types and discuss
  • Use NMAP to perform operating system fingerprinting and versioning
•  

NginX RegExes

• Server Name
• (Host | Domain) Mappings
• Location Modifiers
• Set Default Server
• (Deny | Permit) dotfiles
• (Deny | Permit) Suffixes
• Rewrite Sans Suffix
• Remove Suffix
• Remove Trailing Slash
• Remove 3LD
• 3LD Exemptions
• Fix Infinite Redirect
• Remove Query String
• Query String 444
• Parse Query String