🛡️Security Protocols

A comprehensive repository containing implementation, configuration, and analysis for modern security standards. This project covers the full spectrum of security—from cryptographic foundations and PKI to network intrusion detection and web exploitation.

📑 Table of Contents

• 🛠️ Technology Stack
• 🔐 Module 1: Cryptography & PKI
• 🌐 Module 2: Secure Communication (VPN & SSL)
• 📡 Module 3: Wireless Security
• 🔍 Module 4: Traffic Analysis & NIDS
• ⚔️ Module 5: Web Attacks & Identity
• 🚀 Getting Started

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🛠️ Technology Stack

Category Tools & Protocols

Category	Tools & Protocols
Cryptography	OpenSSL, X.509, PKCS12, JWT
Networking	OpenVPN, IPsec, Wireshark, Iptables
Wireless	Aircrack-ng, Reaver, 802.11 standards
Defense	Snort (NIDS/NIPS), ACLs, DPI
Exploitation	Kali Linux, SSLStrip, DVWA, SQLMap

🔐 Module 1: Cryptography & PKI

Labs 1 & 2 focus on the identity layer of the internet. Digital Certificates (X.509)

Exploration of public-key ownership via digital documents.

• Key Fields: Serial Number, Issuer, Subject, Validity, and Extensions.
• OpenSSL Usage: Generating RSA keys and Certificate Signing Requests (CSR).

openssl req -new -newkey rsa:2048 -nodes -keyout mykey.pem -out myreq.pem

Public Key Infrastructure (PKI)

Building a private Certificate Authority (CA) to manage the lifecycle of trust.

• Tasks: Creating a Root CA, signing server/client certificates, and managing Revocation Lists (CRL).
• Automated PKI: Bash scripts for rapid certificate issuance.

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🌐 Module 2: Secure Communication (VPN & SSL)

Labs 3 & 4 cover the protocols that keep data in transit private.

Virtual Private Networks (VPN)

• OpenVPN: Implementing SSL/TLS-based tunneling with virtual tun0 interfaces.
• IPsec: End-to-end encryption at the Network Layer.
• Lab Goal: Configuring a site-to-site tunnel and troubleshooting NAT traversal.

SSL/TLS Protocol

Deep dive into the handshake process.

• MITM Attacks: Using Kali Linux and sslstrip to downgrade HTTPS traffic.
• Programming: A C-based HTTPS client using libssl-dev to perform secure GET requests.

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📡 Module 3: Wireless Security

Lab 5 explores the vulnerabilities of the 802.11 standard.

• WEP/WPA Cracking: Capturing IVs and using dictionary attacks via aircrack-ng.
• WPS Flaws: Brute-forcing PINs using reaver.
• Defense: Why MAC filtering and SSID hiding are insufficient security measures.

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🔍 Module 4: Traffic Analysis & NIDS

Labs 7 & 8 focus on monitoring and defense. Snort: Real-time & Offline Analysis

Implementation of a Network Intrusion Detection System.

• DPI (Deep Packet Inspection): Beyond port-based filtering to payload analysis.
• Ruleset Creation:
• Example: Detecting malware keywords in HTTP traffic

  alert tcp any any -> any 80 (msg:"Malware keyword detected"; content:"malware"; sid:1000002;)

• PCAP Analysis: Forensic analysis of Heartbleed attacks and Hydra FTP brute-forcing.

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⚔️ Module 5: Web Attacks & Identity

Labs 6 & 9 cover application-level security.

OAuth 2.0 & OpenID Connect

• Implementation: Integrating "Login with Google" into a web application.
• Security: Understanding JWT (JSON Web Tokens) and token revocation.

Web Exploitation (DVWA)

Hands-on exploitation of "Damn Vulnerable Web App" in a Docker environment.

• SQL Injection: Bypassing authentication and dumping database schemas.
• XSS (Cross-Site Scripting): Stealing session cookies via injected scripts.
• Buffer Overflow: Overwriting the stack to redirect execution flow.