6.3 Network Troubleshooting

Content

• Overview and Objectives
  • Learning Objectives
• Network Interface Diagnosis
• Basic Connectivity Testing
• Socket and Connection Analysis
• DNS Troubleshooting
• Packet Capture and Analysis
• Network Performance Testing
• Real-world Context
• Common Pitfalls
• Recommended Reading
• Lab
  • Lab Exercise 1: Systematic Connectivity Diagnosis
  • Lab Exercise 2: Socket and Service Inspection
  • Lab Exercise 3: DNS Troubleshooting
  • Lab Exercise 4: Packet Capture with tcpdump
• Assessment
  • Multiple Choice Questions
  • Short Answer Questions

This chapter is available exclusively to members of The Server Room, my DevOps community of practice. You have multiple options for taking this course, for example self-guided or instructor-led. Check out the course details to learn more!

Updated 2026-03-10