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Table of Contents

  • Introduction

  • Lab 1: Installing Rocky Linux

  • Installing the Operating System

  • Lab 2: Patching the System

  • Updating and Patching
  • Configuring and using dnf

  • Third party solutions

  • Lab 3: Auditing the System

  • A simple home grown integrity checker
  • Tripwire
  • Integrity checking and viewing reports

  • Fine tuning tripwire

  • Lab 4: Gathering information

  • netstat
  • lsof
  • nmap
  • rpcinfo
  • tcpdump

  • telnet

  • Lab 5: Local Security

  • Cracking the system through the boot loader
  • Password protecting the boot loader
  • Disabling un-necessary tty’s
  • Disabling reboot via CTRL+ALT+DEL
  • Enforcing password prompting in single user-mode
  • Set-UID programs

  • John the ripper

  • Lab 6: A staged Hack

  • The PATH

  • Lab 7: TCP wrappers

  • Tcp_wrappers

  • Lab 8: Iptables

  • Iptables essentials
  • Basic Packet Filtering

  • Basic Packet Forwarding

  • Lab 9: Cryptography

  • GnuPG
  • Key Administration
  • Revocation certificates
  • Digital signatures
  • Encrypting and decrypting files
  • sshd
  • ssh
  • scp
  • Authenticating via Public-Key

  • ssh-agent

  • Lab 10: Kernel Level Security

  • Installing GRsecurity
  • gradm
  • ACLs
  • GRsecurity Learning mode
  • SElinux