Wireshark TCP/IP Analysis Training in Copenhagen, Denmark

This course provides a thorough understanding of TCP/IP networking concepts and hands-on packet analysis using Wireshark. Participants will learn how to capture, analyze, and troubleshoot network traffic, identify performance issues, and interpret protocol behavior. The training blends theory with practical exercises for real-world application.

TCP/IP Fundamentals and Wireshark Basics

Module 1: Introduction to TCP/IP Networking

• OSI vs TCP/IP models
• Ethernet, IP, TCP, and UDP basics
• Understanding encapsulation and packet flow

Module 2: Wireshark Overview

• Installing Wireshark on different platforms
• Interface tour and layout explanation
• Capturing live network traffic

Module 3: Basic Packet Capture and Navigation

• Choosing capture interfaces
• Starting, stopping, and saving captures
• Navigating through packet list, details, and bytes panes

Module 4: Basic Filtering and Search

• Display filters vs capture filters
• Applying simple display filters
• Commonly used filters for TCP/IP analysis

Detailed Protocol Analysis

Module 5: Ethernet and ARP Analysis

• Ethernet frame structure
• ARP requests and replies
• Detecting ARP-related issues

Module 6: IP Protocol Analysis

• IPv4 header fields and fragmentation
• IPv6 basics and extension headers
• TTL, MTU, and IP options

Module 7: ICMP Protocol Analysis

• ICMP types and codes
• Ping and traceroute analysis
• Detecting unreachable errors and time exceeded messages

Module 8: UDP Protocol Analysis

• UDP header fields
• DNS, DHCP, and other UDP-based protocols
• Troubleshooting UDP communication issues

TCP Analysis and Troubleshooting

Module 9: TCP Protocol Fundamentals

• TCP header fields
• Three-way handshake and connection teardown
• TCP flags and their significance

Module 10: TCP Performance Analysis

• Window size, scaling, and flow control
• TCP retransmissions, duplicates, and out-of-order packets
• Analyzing round-trip time and throughput

Module 11: Troubleshooting TCP Issues

• Connection resets and timeouts
• Detecting packet loss and latency
• Identifying slow application response vs network delays

Module 12: Wireshark Advanced Tools

• Expert Info window
• Statistics and I/O graphs
• Protocol hierarchy and flow graphs

Practical Session

Advanced Wireshark Usage and Real-World Scenarios

Module 13: Advanced Filtering Techniques

• Complex display filters
• Combining multiple filter conditions
• Using filter expressions for troubleshooting

Module 14: Customizing Wireshark

• Configuring profiles
• Coloring rules for quick analysis
• Creating custom columns and layouts

Module 15: Security and Anomaly Detection

• Detecting suspicious traffic patterns
• Identifying port scans and unusual protocol behavior
• Introduction to encrypted traffic analysis

Module 16: Real-World Troubleshooting Scenarios

• Slow file transfer diagnosis
• Voice over IP (VoIP) analysis basics
• Detecting misconfigurations and faulty equipment

Final Assessment

Review and Q&A