12-Phase Security Masterclass

The Void
Networking Roadmap

A 12-phase technical journey from binary foundations to adversarial traffic analysis.

🛡️

Absolute Basics

Establishing the mental model of connectivity.

🔢

IP Mastery

Subnetting and addressing proficiency.

🧪

Traffic Analysis

Capturing and dissecting raw packets.

💀

Adversarial

Learning how infrastructure is exploited.

01

Foundation & Models

Phases 1-2: Understanding how data moves and the 7-layer architecture.

🏗️

Absolute Basics

What is a network? LAN/WAN/MAN, Client-Server model, and the Internet's core structure.

Foundation
🌐

OSI & TCP/IP Models

7 Layers, Encapsulation, TCP vs UDP, and the 3-Way Handshake protocol.

Core Theory
03

IP Addressing

Phase 3: Deep dive into binary, CIDR, and subnetting logic.

💡

Critical Requirement

Do not move forward until you master subnetting. It is the language of network boundaries.

🔢

IP Structure & Binary

IPv4, Public vs Private, Loopback, APIPA, and binary basics for subnetting.

Math Heavy
🧪

Subnetting Practice

Subnet Masks, CIDR notation (/24, /16), Broadcast addresses, and usable IP ranges.

Priority
04-06

MAC, Ports & DNS

Phases 4-6: Local network concepts, protocols, and name resolution.

🆔

MAC & Local Network

MAC addresses, ARP (IP mapping), Switches vs Hubs, and VLAN basics.

Layer 2
🔍

DNS & Name Resolution

How DNS works, record types (A, MX, TXT), and tools like nslookup/dig.

Protocols

🔹 Phase 5: Common Ports & Services

Service Port Risk Context
SSH 22 Remote Management (Encryption)
DNS 53 Name resolution (UDP/53)
HTTP/S 80/443 Web traffic (Encryption check)
SMB 445 File sharing (High risk/Lateral move)
RDP 3389 Remote Desktop (Brute force target)
07-09

Routing, Devices & Linux

Phases 7-9: Traffic flow, network hardware, and command line mastery.

🛣️

Routing & Flow

Default Gateway, NAT (Translation), and Static vs Dynamic routing.

Infrastructure
🛡️

Network Devices

Deep dive into Firewalls, IDS vs IPS, Proxies, and L3 Switches.

Blue Team
🐧

Linux Networking

ip a, netstat, ss, traceroute, tcpdump, and nmap essentials.

CLI Mastery
10-12

Analysis, Security & Advanced

Phases 10-12: Packet analysis, network attacks, and interview readiness.

🦈

Traffic Analysis

Wireshark packet capture, traffic filtering, and TCP stream analysis.

Packet Level
🎭

Security Networking

ARP Spoofing (MITM), Port Scanning types (SYN vs Full), and DNS spoofing.

Red Team
💡

Advanced Deep Dive

DHCP (DORA), ICMP, MTU, TCP Flags (PSH/URG), and Load Balancing.

Interview Ready