Network Security Troubleshooting
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Network Security Troubleshooting
This course is part of CompTIA Network+ Specialization
Instructors: Mike Meyers
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Recommended experience
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What you'll learn
How to implement network security controls including firewalls, IDS/IPS, VPNs, and network hardening to protect enterprise networks
How to apply a structured troubleshooting methodology to isolate and resolve physical, logical, and application-layer network connectivity issues
How to use professional network diagnostic tools including protocol analyzers, cable testers and network scanners to resolve complex network problems
Skills you'll gain
- Network Security
- Hardening
- Infrastructure Security
- Network Architecture
- Network Switches
- Distributed Denial-Of-Service (DDoS) Attacks
- Network Troubleshooting
- Security Controls
- Network Analysis
- Network Performance Management
- Diagnostic Tests
- Hardware Troubleshooting
- Virtual Private Networks (VPN)
- Network Monitoring
- Threat Detection
Tools you'll learn
Details to know
June 2026
5 assignments
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There are 5 modules in this course
Total Seminars Network Security Troubleshooting course covers network security and network troubleshooting, the two domains that prove a network professional's readiness for real-world work. Covering approximately 4 of expert instruction, learners develop the skills to secure networks from threats and systematically resolve complex network problems.
Learners benefit by understanding how to implement network security controls including firewalls, IDS/IPS, VPNs, and network hardening practices, as well as how to apply a structured troubleshooting methodology to diagnose and resolve physical, data link, network, and application-layer connectivity issues. online labs reinforce security implementation and troubleshooting tasks. By the end of this course, learners will be able to secure network infrastructure and resolve network connectivity problems using professional tools and methods.
This chapter reviews common network security threats and defenses, including rogue services, denial of service attacks, on path attacks, malware, social engineering, logical security models, device hardening, equipment disposal, and physical security controls.
What's included
5 videos1 reading1 assignment1 plugin
5 videos•Total 26 minutes
- Course Introduction•1 minute
- Security Concepts•6 minutes
- Defense in Depth (DiD)•5 minutes
- Rogue DHCP Servers•4 minutes
- Denial of Service (DoS) and Distributed Denial of Service (DDoS)•10 minutes
1 reading•Total 2 minutes
- Protecting Your Network Handout•2 minutes
1 assignment•Total 8 minutes
- Security Concepts and Threats•8 minutes
1 plugin•Total 3 minutes
- Security Terminology (Challenge)•3 minutes
What's included
6 videos1 assignment2 plugins
6 videos•Total 55 minutes
- On-Path Attacks•22 minutes
- VLAN Hopping•6 minutes
- Life-Cycle Management•10 minutes
- Malware•6 minutes
- Social Engineering•8 minutes
- Patch Management (Show)•3 minutes
1 assignment•Total 10 minutes
- Network Attacks•10 minutes
2 plugins•Total 8 minutes
- Patch Management (Click-Through)•5 minutes
- Network Attacks (Challenge)•3 minutes
This chapter explains the role of network monitoring, the key data administrators track to maintain performance, and the essential steps for building an effective troubleshooting process.
What's included
5 videos1 assignment4 plugins
5 videos•Total 30 minutes
- Logical Security•5 minutes
- Physical Security•13 minutes
- Device Hardening (Show)•5 minutes
- Access Control Lists (ACLs) (Show)•3 minutes
- Implement Least Privilege (Show)•4 minutes
1 assignment•Total 12 minutes
- Security Hardening & Defense•12 minutes
4 plugins•Total 18 minutes
- Device Hardening (Click-Through)•5 minutes
- Access Control Lists (ACLs) (Click-Through)•5 minutes
- Implement Least Privilege (Click-Through)•5 minutes
- Authentication Methods (Challenge)•3 minutes
What's included
5 videos1 reading1 assignment3 plugins
5 videos•Total 32 minutes
- Network Monitoring Technologies•14 minutes
- System Monitoring•8 minutes
- Network Troubleshooting•5 minutes
- Troubleshoot Switch Issues (Show)•1 minute
- Troubleshoot Wireless Issues (Show)•4 minutes
1 reading•Total 2 minutes
- Network Monitoring and Troubleshootin Handout•2 minutes
1 assignment•Total 12 minutes
- Untitled•12 minutes
3 plugins•Total 13 minutes
- Troubleshooting Method (Challenge)•3 minutes
- Troubleshoot Switch Issues (Click-Through)•5 minutes
- Troubleshoot Wireless Issues (Click-Through)•5 minutes
Final graded assessment
What's included
1 assignment
1 assignment•Total 38 minutes
- Course Assessment•38 minutes
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