Table of Contents

Security

This section covers a range of security topics including encryption, secure communications, open source intelligence (OSINT), and wireless security.

Topics

  • PGP Encryption - Secure communications with Pretty Good Privacy
  • SSH - Secure Shell configuration and best practices
  • OSINT - Open Source Intelligence techniques and tools
  • Wireless Security - Security practices for wireless networks

Getting Started

Security Fundamentals

Understanding these core security principles will help you build a strong foundation:

  1. CIA Triad:

    • Confidentiality: Ensuring that information is accessible only to authorized users
    • Integrity: Maintaining the accuracy and trustworthiness of data
    • Availability: Ensuring systems and data are accessible when needed

  2. Defense in Depth: Implementing multiple layers of security controls

  3. Principle of Least Privilege: Providing users with minimal access rights needed for their job functions

Essential Security Practices

1. Secure Communications

For encrypted communications with PGP:

# Generate a new PGP key pair
gpg --full-generate-key

# Export your public key to share with others
gpg --export --armor your@email.com > public_key.asc

# Encrypt a file for a recipient
gpg --encrypt --recipient recipient@email.com file.txt

See the PGP guide for more detailed instructions.

2. Secure Remote Access

Set up SSH with key-based authentication:

# Generate SSH key pair
ssh-keygen -t ed25519 -C "your_email@example.com"

# Copy public key to remote server
ssh-copy-id user@remote-server

# Connect to remote server securely
ssh user@remote-server

See the SSH documentation for advanced configurations.

3. Information Gathering

OSINT (Open Source Intelligence) techniques:

# Use whois for domain information
whois example.com

# DNS information gathering
dig example.com ANY

Explore more in the OSINT section.

Next Steps

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