Explore comprehensive networking fundamentals through this extensive video collection covering packet transmission, subnetting mastery, VLANs, cryptography, and network address translation. Master packet movement through networks starting with Address Resolution Protocol (ARP) basics, then dive deep into a complete 7-part subnetting series that teaches problem-solving techniques, time-saving tricks, and both fixed-length and variable-length subnet masks across all IP ranges. Learn VLAN concepts including native VLAN configurations and routing precedence when multiple network paths exist. Understand broadcast types through practical demonstrations and packet captures, then tackle hands-on Packet Tracer challenges to identify network imposters at Layer 2. Develop cryptography expertise covering hashing algorithms, data integrity protection through HMAC, symmetric versus asymmetric encryption, public-private key operations, and complete SSL/TLS implementation sequences. Examine real-world scenarios like Facebook's outage to understand BGP, DNS, and Anycast technologies. Master network address translation techniques including static NAT, dynamic PAT, dynamic NAT, policy NAT, and twice NAT configurations. Gain practical experience with OpenSSL for encrypting and decrypting private key files, plus explore public key infrastructure and advanced algorithms like RSA and Diffie-Hellman key exchange with proven mathematical examples.

Syllabus

Packet Traveling - How Packets Move Through a Network
Address Resolution Protocol (ARP) in less than 5 minutes
What is Subnetting? - Subnetting Mastery - Part 1 of 7
Drawing the Cheat Sheet - Subnetting Mastery - Part 2 of 7
How to solve ANY Subnetting Problems in 60 seconds or less - Subnetting Mastery - Part 3 of 7
Practice Examples - Subnetting Mastery - Part 4 of 7
Time-Saving Tricks for Subnetting - Subnetting Mastery - Part 5 of 7
Subnetting in the /17 - /24 range - Subnetting Mastery - Part 6 of 7
Subnetting in the /1 - /16 range - Subnetting Mastery - Part 7 of 7
Fixed-Length Subnet Mask (FLSM) - Subnetting Mastery - FLSM and VLSM Appendix Part 1 of 2
Variable-Length Subnet Mask (VLSM) - Subnetting Mastery - FLSM and VLSM Appendix Part 2 of 2
Native VLAN - the DEFINITIVE illustration
What are VLANs? -- the simplest explanation
Route Precedence -- How does a Router choose a path when multiple paths exist?
Route Precedence -- Answer to Bonus Questions
Local Broadcast and Directed Broadcasts - Description and Demonstration
Local Broadcast and Directed Broadcasts - Demo and Packet Captures
Packet Tracer challenge: Find the Imposter - Layer 2
Packet Tracer challenge: Find the Imposter - Layer 2 - SOLUTION VIDEO
Hashing, Hashing Algorithms, and Collisions - Cryptography - Practical TLS
Data Integrity - How Hashing is used to ensure data isn't modified - HMAC - Cryptography
Facebook went down!! Let's use that to talk about BGP, DNS, and Anycast
Encryption - Symmetric Encryption vs Asymmetric Encryption - Cryptography - Practical TLS
Public and Private Keys - Signatures & Key Exchanges - Cryptography - Practical TLS
How SSL & TLS use Cryptographic tools to secure your data - Practical TLS
Public Key Infrastructure - What is a PKI? - Cryptography - Practical TLS
RSA Algorithm - How does it work? - I'll PROVE it with an Example! -- Cryptography - Practical TLS
Diffie-Hellman Key Exchange - the MAGIC that makes it possible - Cryptography - Practical TLS
TLS / SSL - The complete sequence - Practical TLS
How does NAT conserve IP Address Space? (and why!) - Network Address Translation
Static NAT - Network Address Translation
Dynamic PAT - Network Address Translation
Dynamic NAT - Network Address Translation
Policy NAT - Network Address Translation
Twice NAT - Network Address Translation
OpenSSL - Encrypting and Decrypting Private Key Files