Course Content
1
The TCP/IP Stack and Layered Models: Mapping Packets to OSI Layers
5 lessons- 1Decompose a Web Request Into OSI and TCP/IP LayersFree28 min
- 2Trace Encapsulation and Decapsulation Across the Stack28 min
- 3Identify Protocols by Port and Layer Using a Live Packet28 min
- 4Diagnose Layer-Specific Network Failures From Symptoms30 min
- 5Integrate the TCP/IP Stack Into a Repeatable Triage Workflow32 min
2
IP Addressing and Subnetting: Calculating Networks for Security Boundaries
5 lessons3
Core Network Services: Inspecting DNS, DHCP, and ARP Behavior
5 lessons4
Wireshark: Capturing, Filtering, and Dissecting Network Traffic
5 lessons5
Firewalls and Access Control: Writing and Auditing Filtering Rules
5 lessons6
Nmap: Discovering Hosts, Mapping Services, and Validating Defenses
5 lessons- 1Discover Live Hosts Across a Subnet With Nmap28 min
- 2Enumerate Ports and Services With SYN, UDP, and Version Scans30 min
- 3Extend Nmap Scans With NSE Scripts and Output Formats28 min
- 4Detect Nmap Scanning From the Defender's Side30 min
- 5Validate Network Defenses End-to-End With a Scan-and-Detect Drill32 min