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Welcome to Sheryians Cyber School!
This is the Complete Networking Tutorial 2026, designed for absolute beginners to advanced learners who want to master real-world computer networks. In this video, we cover everything: what networking is, how data travels, the OSI & TCP/IP models, IP addressing, subnetting, ports & protocols, routing & switching, DNS, DHCP, NAT, firewalls, packets, and hands-on analysis tools like Wireshark.
Whether you’re preparing for cybersecurity, ethical hacking, cloud, or IT roles, this tutorial gives you the full foundation you need to understand how the internet works at a deep level. Learn step-by-step and become network-ready for your cybersecurity journey.
⏱️ Timestamps 00:00 - Introduction & Roadmap 01:30 - What is Networking? 02:06 - Why Learn Networking? (Attack & Defense) 04:55 - History of Networking (ARPANET) 06:45 - Types of Networks (LAN, MAN, WAN, PAN) 08:44 - Performance Terms (Latency, Bandwidth, Throughput, Jitter) 09:39 - Network Topologies (Star, Bus, Ring, Mesh) 12:16 - Client-Server vs. Peer-to-Peer Architecture 12:53 - OSI Model 14:40 - Encapsulation & Decapsulation 15:23 - TCP/IP Model (4-Layer Model) 16:35 - Types of Cables (Copper vs. Fiber vs. Aux) 19:00 - Transceivers & Connectors (RJ45, SFP) 20:32 - Link Speed & PoE (Power Over Ethernet) 21:30 - Cabling Standards (Cat5 vs. Cat6) 24:50 - Ethernet Frames (Source MAC, Destination MAC, Payload) 26:19 - Switching Logic (CAM Tables, Learning, Flooding) 29:09 - Spanning Tree Protocol (STP) 29:43 - VLANs (Virtual Local Area Networks) & 802.1Q Tagging 31:57 - Collision & Broadcast Domains 32:38 - IP Addressing & Subnetting 40:45 - Classes of IP Address (A, B, C, D, E) 44:09 - IP Header Fields 44:45 - Address Resolution Protocol (ARP) & Link Resolution 48:11 - ARP Spoofing 49:51 - Networking Devices (Hub, Switch, Router, Bridge, Cable Tester, Crimping tool) 55:05 - Managed, Unmanaged Switch & Layer 2, Layer 3 Devices 56:44 - Access vs Trunk Ports 59:40 - Router Basics & Packet Forwarding (NAT, PAT, address translation) 01:03:19 - Routing Fundamentals 01:05:00 - Static & Dynamic Routing 01:06:42 - Route Metrics & Administrative Distance 01:09:30 - Interior Routing Protocol & Enhanced Interior Gateway Routing Protocol (EIGRP) 01:17:00 - IS-IS (Intermediate System to Intermediate System) 01:18:31 - BGP (Border Gateway Protocol) 01:26:10 - Packet Delivery & Fragmentation 01:28:14 - TTL (Time To Live), MTU (Maximum Transmission Unit), Header Fields 01:29:33 - ICMP (Ping, Traceroute) 01:32:19 - Firewall Traversal 01:32:33 - Network Segmentation & Isolation 01:33:56 - MPLS (Multiprotocol Label Switching) 01:35:24 - Label Switching & Forwarding 01:36:27 - Key Components (LSR, LER, PE, CE) 01:37:45 - Segment Routing (SR-MPLS, SRv6) 01:39:49 - Unicast, Multicast, Broadcast 01:42:01 - Transport Layer TCP & UDP (Sequence Numbers, ACKs, Sliding Window) 01:45:22 - Congestion Control 01:46:21 - UDP 01:47:35 - Port Numbers & Multiplexing 01:49:26 - QoS (Quality of Service) Objectives (DiffServ, IntServ) 01:52:18 - Traffic Engineering in large Networks 01:53:36 - VPNs & IPSec 02:05:20 - SSL, TLS 02:07:18 - Tunneling Flow with Encryption 02:09:03 - Data Center Networking 02:10:28 - Spine-Leaf vs Three Tier Architecture & East-West vs North-South Traffic 02:19:53 - Microsegmentation 02:22:25 - Overlay in DCNs (VXLAN, EVPN) 02:26:20 - Virtual Networking Concepts 02:27:35 - VPC/VNet, Subnets, Route Tables 02:29:18 - Security Groups, NACLs 02:31:08 - Hybrid Connectivity, VPN Gateways 02:33:05 - Network Programmability & Automation 02:33:56 - Why Automation is Transforming Networking 02:35:42 - APIs & Network Communication, gNMI (gRPC Network Management Interface) 02:39:25 - Infrastructure as Code (IaC) 02:42:08 - Summary 02:43:12 - Outro
We are creating a playlist for Cyber Security Mastery: Beginner to Advanced https://www.youtube.com/playlist?list=PLiqfJrRIkP2J-nxiS9_Fk_cf1bVp8nJXj
Notes-https://www.notion.so/Networking-for-Cyber-Security-2d91b5f74227808abe4ac72f6de530e9?source=copy_link
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