Understand the fundamental network models that govern how data flows across networks.
The Open Systems Interconnection model provides a conceptual framework for network communication.
The practical implementation model used in modern networks and the internet.
Master IP addressing, subnetting, and NAT concepts essential for network design and security.
Divide networks into smaller, manageable segments for better organization and security.
Network Address Translation allows private IPs to communicate with public networks.
How subnetting and NAT affect network security and monitoring.
Understand the fundamental differences between connection-oriented and connectionless protocols.
Connection-oriented protocol with guaranteed delivery and error checking.
Connectionless protocol with no guarantee of delivery or ordering.
Learn to capture, analyze, and interpret network traffic for security monitoring and troubleshooting.
The industry-standard network protocol analyzer for packet capture and analysis.
Command-line packet analyzer for Unix-like systems.
Methods for analyzing captured network traffic for security insights.
Examine packet headers and payloads
Identify normal vs anomalous behavior
Measure latency, throughput, errors
Detect attacks and suspicious activity
How packet analysis supports cybersecurity operations.
Master the key protocols that power modern networks and their security implications.
Domain Name System - translates domain names to IP addresses.
Dynamic Host Configuration Protocol - automatically assigns IP addresses.
Address Resolution Protocol - maps IP addresses to MAC addresses.
Internet Control Message Protocol - network diagnostics and error reporting.