Practical Network Hacking From Scratch : Network Security

Boot and explore a preinstalled Linux hacking environment with a vast tool library. Navigate information gathering, web application analysis, exploitation, and forensic tools to begin practical network security work.

Master essential linux commands for network security: pwd, ls, cd, clear, ifconfig, iwconfig, chmod, run tools with ./, and manage packages with apt-get.

Explore the fundamentals of networking, including device connections, router access to the internet, and packets with source and destination MAC addresses, and its relevance to ethical hacking.

Learn how wifi works, how wireless interfaces differ from bluetooth, and why wifi security matters as wireless devices proliferate, driving low-cost, high-speed connectivity.

Explore how wifi encryption protects data by applying cryptographic algorithms across WEP, WPA, and WPA2, and why patches and standard updates from the Wi-Fi Alliance matter.

Explore how internet protocol addresses work, including IPv4 32-bit addresses, four octets, and the 0–255 range; compare public and private IP addresses and class A, B, and C networks.

Explore how the dynamic host configuration protocol assigns IP addresses to devices on local area networks. Note the use of private ranges such as 192.168.0.0 to 192.168.255.255 for allocation.

Explore how network address translation converts private IPs to a public IP address via a router, using a translation table to map internal devices to internet destinations.

Understand how ports extend an IP address by directing traffic to specific services, and review common ports such as 20, 21, 22, 23, 25, 53, and 80.

Understand ip and tcp headers, including version, header length, tos, ttl, id, flags, checksum, and the tcp three-way handshake with ports, sequence and acknowledgment numbers.

Explore how the Wi-Fi alliance certifies wireless technologies to ensure interoperability. Understand 802.11 specifications, frequencies, transmission rate, bandwidth, modulation, and channels, and how access points and clients communicate.

Compare 4g and 5g frequencies: 4g offers longer range but slower speeds and more interference, while 5g delivers faster data with shorter range and less crowding through more channels.

Explore wireless adapter modes, including monitor and listening modes, to capture traffic, set up virtual access points, and test network boundaries with hands-on networking techniques.

Learn to connect a wifi adapter to the Kali Linux machine through VirtualBox, enable monitor mode, and verify the wlan interface with ifconfig.

Switch a wireless adapter from managed to monitor mode to capture all packets in range, including those not addressed to your Mac, using ifconfig and sudo.

Operate a packet sniffer to list nearby networks, capture packets, and reveal MAC addresses, signal strength, beacon frames, channel, encryption type, and connected clients for security assessment.

This lecture demonstrates a focused attack on a single network, teaching how to sniff traffic, identify connected devices and mac addresses, and store data for analysis.

Master a de-authentication attack to disconnect devices from any network within range by spoofing mac addresses and sending authentication packets with airplay engie.

Learn to crack WPA and WPA2 handshakes by sniffing, capturing the handshake in monitor mode, and using crunch and aircrack-ng for a dictionary attack.

Automate WiFi auditing with a GitHub tool by cloning it, installing dependencies, and enabling monitor mode. Capture handshakes and run offline dictionary attacks to crack WiFi passwords.

Explore wifi phishing attacks that create a fake access point and clone Facebook login pages to harvest credentials, using Wifiphisher to demonstrate how attackers capture user data.