Certified - CompTIA Network + Audio Course

Welcome to the CompTIA Network+ Certification Audio Course

14 Oct 2025

Contributed by Lukas

Episode 184: Network Troubleshooting Methodology Recap and Exam Readiness

20 Jul 2025

Contributed by Lukas

To wrap up the series, this episode reviews the full troubleshooting methodology—from identifying the problem to documenting the fix. We walk throug...

Episode 183: BYOD, Licensing Issues, and Troubleshooting Oddities

20 Jul 2025

Contributed by Lukas

Not every issue fits into neat categories. In this episode, we address edge-case problems like Bring Your Own Device (BYOD) compatibility, expired lic...

Episode 182: Optical, Hardware, and Performance Issues — Identifying and Resolving Problems

20 Jul 2025

Contributed by Lukas

This episode revisits advanced troubleshooting at the hardware and optical layer. We cover transceiver problems, dirty fiber connectors, power mismatc...

Episode 181: DNS and NTP Failures — Troubleshooting Name and Time Resolution

20 Jul 2025

Contributed by Lukas

DNS and NTP are often invisible—until they fail. This episode shows how to diagnose and fix issues with domain name resolution and time synchronizat...

Episode 180: Asymmetric Routing, Multicast Flooding, and ACL Misconfigurations

20 Jul 2025

Contributed by Lukas

Some network issues are subtle, involving advanced concepts like asymmetric routing, multicast flooding, and access control list (ACL) errors. This ep...

Episode 179: Collision Domains, Broadcast Storms, and Routing Loops

20 Jul 2025

Contributed by Lukas

Poor network segmentation can lead to serious Layer 2 and Layer 3 problems. In this episode, we explain how excessive collision domains on legacy hubs...

Episode 178: Routing Troubleshooting — Missing Routes, DHCP, and Address Conflicts

20 Jul 2025

Contributed by Lukas

Routing issues can silently break connectivity—even if everything looks fine at Layer 2. In this episode, we diagnose common routing problems, inclu...

Episode 177: Network Foundations — VLAN, Interface, and Configuration Checks

20 Jul 2025

Contributed by Lukas

Sometimes network issues stem from the basics: incorrect VLAN assignment, disabled interfaces, or outdated configurations. This episode walks through ...

Episode 176: Wireless Configuration Problems — SSID, Encryption, and Client Issues

20 Jul 2025

Contributed by Lukas

Even if the signal is strong, configuration mistakes can block connectivity. This episode addresses common wireless configuration errors such as misma...

Episode 175: Wireless Issues — Antenna Placement, Channels, and Signal Loss

20 Jul 2025

Contributed by Lukas

Signal problems are among the most common wireless complaints—and many stem from poor antenna planning. This episode examines how antenna placement,...

Episode 174: Wireless Limitations — Throughput, Signal Strength, and Power

20 Jul 2025

Contributed by Lukas

Wireless technology is incredibly convenient—but also limited by physical and environmental factors. In this episode, we explore the inherent constr...

Episode 173: Interface, Routing, and Platform-Specific Diagnostics

20 Jul 2025

Contributed by Lukas

Every device platform—whether Cisco, Juniper, or another—has its own diagnostic approach. In this episode, we explore common troubleshooting techn...

Episode 172: Infrastructure Tools — TFTP, Terminal Emulators, and Basic Commands

20 Jul 2025

Contributed by Lukas

Some of the most essential network management tools are also the most overlooked. This episode covers infrastructure tools such as TFTP servers for fi...

Episode 171: Network Discovery and Performance Monitoring

20 Jul 2025

Contributed by Lukas

Network visibility starts with knowing what’s on your network. In this episode, we explain network discovery techniques using tools like ping sweeps...

Episode 170: Packet Inspection and Traffic Analysis Tools

20 Jul 2025

Contributed by Lukas

To truly understand what’s happening on the network, you need to inspect the packets themselves. This episode introduces tools like Wireshark, tcpdu...

Episode 169: Wireless Troubleshooting — Tools and Bandwidth Analysis

20 Jul 2025

Contributed by Lukas

Wireless networks introduce a layer of complexity that often demands specialized tools for visibility. In this episode, we cover wireless troubleshoot...

Episode 168: Advanced Tools for Fiber Optics and Signal Testing

20 Jul 2025

Contributed by Lukas

Fiber requires a different class of diagnostic tools due to its precision and sensitivity. In this episode, we cover devices like OTDRs (Optical Time ...

Episode 167: Cable Testing Tools — Crimpers, Punchdowns, and Locators

20 Jul 2025

Contributed by Lukas

Troubleshooting starts with the right tools. In this episode, we walk through the essential cable testing and installation tools you’ll use on the j...

Episode 166: Link Layer Diagnostics — Duplexing, Transceivers, and LEDs

20 Jul 2025

Contributed by Lukas

Link-level problems are easy to overlook but frequently cause intermittent issues. This episode explores duplex mismatches—where one device is set t...

Episode 165: Common Cable Faults, Errors, and Hardware Issues

20 Jul 2025

Contributed by Lukas

Even a well-designed network can experience hardware or cabling faults over time. This episode breaks down common problems such as broken connectors, ...

Episode 164: Cable Performance Specifications and Specialized Applications

20 Jul 2025

Contributed by Lukas

Cable problems can often look like application issues, but they require a different kind of troubleshooting. In this episode, we review cable specific...

Episode 163: Troubleshooting Methodology — Implementing Solutions and Documentation

20 Jul 2025

Contributed by Lukas

Once you’ve confirmed the cause of a network issue, it's time to solve it. This episode covers the final stages of the troubleshooting methodology: ...

Episode 162: Troubleshooting Methodology — Identifying Problems and Probable Causes

20 Jul 2025

Contributed by Lukas

The foundation of effective troubleshooting is a structured approach. In this episode, we introduce the CompTIA troubleshooting methodology, focusing ...

Episode 161: Welcome to Domain 5 — Network Troubleshooting

20 Jul 2025

Contributed by Lukas

In this final domain, we turn our focus to troubleshooting—a skill that ties together everything you’ve learned so far. This episode introduces Do...

Episode 160: Detection Methods and Prevention through Training

20 Jul 2025

Contributed by Lukas

Security tools can’t catch every threat—but informed users often can. This episode looks at the balance between technical detection methods and us...

Episode 159: Physical Security Fundamentals — Access Control and Asset Disposal

20 Jul 2025

Contributed by Lukas

While cyber defenses are critical, physical security is just as important. In this episode, we explain how physical access controls protect infrastruc...

Episode 158: Advanced Wireless Security — MAC Filters, Client Isolation, and Captive Portals

20 Jul 2025

Contributed by Lukas

Wireless networks require layered security controls to keep unauthorized users out and ensure a clean client experience. In this episode, we cover adv...

Episode 157: Firewall Rules and ACL Management

20 Jul 2025

Contributed by Lukas

Firewalls and access control lists are the gatekeepers of your network, and understanding how to configure them correctly is essential. This episode e...

Episode 156: Hardening Network Devices — Interfaces, Passwords, and Firmware Management

20 Jul 2025

Contributed by Lukas

Securing the network starts with securing its devices. In this episode, we focus on hardening best practices for routers, switches, and firewalls. Thi...

Episode 155: Dynamic ARP Inspection, DHCP Snooping, and Control Plane Policing

20 Jul 2025

Contributed by Lukas

Advanced network protection mechanisms focus on securing internal traffic and device behavior. This episode introduces three such features: Dynamic AR...

Episode 154: Network Hardening Essentials — SNMP, Router Advertisements, and Port Security

20 Jul 2025

Contributed by Lukas

Hardening your network means reducing its attack surface and securing its services. In this episode, we look at three high-priority hardening practice...

Episode 153: Phishing, Tailgating, and Physical Threats

20 Jul 2025

Contributed by Lukas

Security doesn’t stop at the firewall—physical access and social manipulation play a major role in network compromise. In this episode, we explore...

Episode 152: IP Spoofing, Deauthentication, and Social Engineering

20 Jul 2025

Contributed by Lukas

Some of the most dangerous network threats don’t rely on malware—they rely on deception. In this episode, we explore IP spoofing, a method where a...

Episode 151: Ransomware, Malware, and Password Attacks

20 Jul 2025

Contributed by Lukas

Malicious software remains one of the most common and destructive threats to networks and users alike. In this episode, we examine different types of ...

Episode 150: ARP Spoofing, MAC Spoofing, and Rogue Devices

20 Jul 2025

Contributed by Lukas

When devices pretend to be something they’re not, serious security problems can follow. This episode focuses on spoofing attacks—specifically ARP ...

Episode 149: VLAN Hopping and Layer 2 Exploits

20 Jul 2025

Contributed by Lukas

VLANs offer segmentation—but they’re not invulnerable. In this episode, we look at how attackers can bypass VLAN boundaries using VLAN hopping tec...

Episode 148: On-Path Attacks and DNS Poisoning — Network Compromise Techniques

20 Jul 2025

Contributed by Lukas

On-path attacks, formerly known as man-in-the-middle attacks, are some of the most dangerous network threats. In this episode, we explain how attacker...

Episode 147: Denial-of-Service (DoS) and Distributed Denial-of-Service (DDoS) Attacks

20 Jul 2025

Contributed by Lukas

Denial-of-Service attacks aim to disrupt services by overwhelming a system’s resources—and understanding how they work is key to protecting agains...

Episode 146: Risk Management, Security Assessments, and SIEM

20 Jul 2025

Contributed by Lukas

Every security decision is about balancing risk, and in this episode, we dive into how organizations identify, measure, and manage those risks. You’...

Episode 145: Securing Access with 802.1X and EAP

20 Jul 2025

Contributed by Lukas

802.1X is the gatekeeper of modern enterprise networks, ensuring only authenticated users and devices can connect. This episode explains how 802.1X wo...

Episode 144: Centralized Authentication — TACACS+, RADIUS, SSO, and Directory Services

20 Jul 2025

Contributed by Lukas

Centralized authentication simplifies user management while enhancing security. In this episode, we compare two core protocols—TACACS+ and RADIUS—...

Episode 143: Advanced Security Mechanisms — NAC, Honeypots, and Authentication Models

20 Jul 2025

Contributed by Lukas

Beyond basic firewalls and access controls, advanced security mechanisms offer deeper visibility and proactive defense. In this episode, we explore Ne...

Episode 142: Zero Trust and Defense in Depth Models

20 Jul 2025

Contributed by Lukas

Zero Trust networking flips the traditional perimeter-based security model on its head. In this episode, we unpack the Zero Trust principle of “neve...

Episode 141: Principle of Least Privilege and RBAC

20 Jul 2025

Contributed by Lukas

Security in networking isn’t just about blocking attacks—it’s about minimizing exposure by limiting what users and systems can access. In this e...

Episode 140 — Vulnerabilities, Exploits, and Exposure Concepts

20 Jul 2025

Contributed by Lukas

This episode dives into the foundational security concepts of vulnerabilities, exploits, and exposures—terms that appear throughout the Network Plus...

Episode 139: The CIA Triad and Types of Network Threats

20 Jul 2025

Contributed by Lukas

Every security strategy begins with the CIA Triad—Confidentiality, Integrity, and Availability. In this episode, we explore how these three principl...

Episode 138: Welcome to Domain 4 — Network Security

20 Jul 2025

Contributed by Lukas

Domain 4 marks a transition from availability and performance into security—protecting the integrity and confidentiality of the network. In this epi...

Episode 137: Backup and Restore for Network Devices

20 Jul 2025

Contributed by Lukas

Configuration data is as critical as hardware—and losing it can lead to hours of downtime. In this episode, we walk through backup and restore proce...

Episode 136: VRRP and FHRP — Virtual Router Redundancy

20 Jul 2025

Contributed by Lukas

Routers are essential gateways, and if one fails, the network can grind to a halt—unless redundancy is in place. This episode explores VRRP (Virtual...

Episode 135: Diverse Paths and Internet Redundancy — Ensuring Availability

20 Jul 2025

Contributed by Lukas

Redundancy isn’t just about hardware—it’s also about network paths. In this episode, we explore how having multiple physical and logical paths e...

Episode 134: Disaster Recovery Sites and Architectures (Cold, Warm, Hot, Cloud, Active)

20 Jul 2025

Contributed by Lukas

Disaster recovery isn’t one-size-fits-all—different organizations require different levels of readiness. In this episode, we examine recovery site...

Episode 133: Hardware Redundancy — Routers, Switches, and Facility Infrastructure

20 Jul 2025

Contributed by Lukas

Hardware failures are inevitable—but outages are not, if redundancy is properly built into your network. In this episode, we focus on how to create ...

Episode 132: Load Balancing, Multipathing, and NIC Teaming

20 Jul 2025

Contributed by Lukas

High-availability and performance optimization often rely on distributing traffic across multiple paths or interfaces. This episode breaks down three ...

Episode 131: Business Agreements — NDAs, SLAs, MOUs

20 Jul 2025

Contributed by Lukas

Networks don’t operate in a vacuum—they’re governed by agreements that define responsibilities, expectations, and legal protections. In this epi...

Episode 130: Network Documentation — Physical, Logical, and Audit Reports

20 Jul 2025

Contributed by Lukas

A well-documented network is easier to maintain, troubleshoot, and scale. In this episode, we explore the different types of network documentation, in...

Episode 129: Security Hardening Policies — Passwords, DLP, and Device Access

20 Jul 2025

Contributed by Lukas

Security begins with hardening the network against misuse and unauthorized access. In this episode, we review core hardening policies that every netwo...

Episode 128: Standard Operating Procedures (SOPs)

20 Jul 2025

Contributed by Lukas

Standard Operating Procedures are the rulebooks of a stable network environment. In this episode, we explain why SOPs matter, how they are developed, ...

Episode 127: Incident Response, Disaster Recovery, and Business Continuity

20 Jul 2025

Contributed by Lukas

When the worst happens, a well-prepared team can make all the difference. In this episode, we examine the roles of incident response, disaster recover...

Episode 126: Change Management and System Life Cycle

20 Jul 2025

Contributed by Lukas

Change is inevitable—but unplanned change can break your network. This episode walks you through the change management process, including how to pro...

Episode 125: Baselines and NetFlow — Measuring Network Health

20 Jul 2025

Contributed by Lukas

A baseline is a snapshot of normal network behavior, and it’s one of the most powerful tools for detecting anomalies. This episode explores how to c...

Episode 124: Interface Errors and Environmental Factors — Early Detection

20 Jul 2025

Contributed by Lukas

Interface errors can be the first signs of deeper problems, and in this episode, we cover the most common indicators that a link is failing. You’ll ...

Episode 123: Logging Essentials — Syslog, Auditing, and Interface Statistics

20 Jul 2025

Contributed by Lukas

Logs are a goldmine of operational insight—and in this episode, we explain how to access, interpret, and act on the information they provide. You’...

Episode 122: Performance Metrics, Sensors, and SNMP Basics

20 Jul 2025

Contributed by Lukas

Monitoring network health begins with knowing what to measure—and how. In this episode, we cover the essential performance metrics that indicate how...

Episode 121: Welcome to Domain 3 — Network Operations

20 Jul 2025

Contributed by Lukas

In Domain 3, we shift focus from implementation to operation, diving into what it takes to maintain, monitor, and document a functional network. This ...

Episode 120: MIMO and MU-MIMO — Multiplying Wireless Performance

20 Jul 2025

Contributed by Lukas

Multiple-Input, Multiple-Output (MIMO) is one of the most powerful features in modern wireless communication, dramatically increasing speed and effici...

Episode 119: Cellular Technologies — Connecting Beyond Wi-Fi

20 Jul 2025

Contributed by Lukas

Cellular networks offer wide-area coverage and are vital for connecting mobile devices and remote locations to the internet. In this episode, we walk ...

Episode 118: Securing Wi-Fi — Encryption Standards and Enterprise Practices

20 Jul 2025

Contributed by Lukas

Wireless networks require more than just a strong signal—they also demand strong security. In this episode, we explore the evolution of wireless enc...

Episode 117: Wi-Fi Topologies, SSIDs, and Antenna Types

20 Jul 2025

Contributed by Lukas

Wireless networks can be built in several topologies, and choosing the right one affects everything from coverage to scalability. In this episode, we ...

Episode 116: Wireless Frequencies, Channels, and Bandwidth Optimization

20 Jul 2025

Contributed by Lukas

Wireless networks are built on radio frequencies, and how you manage those frequencies has a massive impact on performance and reliability. This episo...

Episode 115: 802.11 Wireless Standards — From a to ax

20 Jul 2025

Contributed by Lukas

Wireless networking continues to evolve rapidly, and understanding the 802.11 family of standards is essential for modern network support. In this epi...

Episode 114: CSMA/CD, ARP, and Neighbor Discovery

20 Jul 2025

Contributed by Lukas

Legacy and modern protocols alike underpin communication within local networks, and this episode brings together three foundational ones: CSMA/CD, ARP...

Episode 113: Spanning Tree Protocol — Loop Prevention for Switches

20 Jul 2025

Contributed by Lukas

Spanning Tree Protocol (STP) is critical for preventing Layer 2 loops that can crash entire networks. In this episode, we explain how STP operates by ...

Episode 112: Power over Ethernet (PoE and PoE+)

20 Jul 2025

Contributed by Lukas

Power over Ethernet (PoE) allows devices like access points, VoIP phones, and security cameras to receive power and data over a single Ethernet cable....

Episode 111: MAC Address Tables — How Switches Learn

20 Jul 2025

Contributed by Lukas

Switches rely on MAC address tables to decide where to forward frames, and this episode walks you through exactly how these tables are built and maint...

Episode 110: Jumbo Frames and Auto-MDI-X — Optimizing Transmission

20 Jul 2025

Contributed by Lukas

Optimizing data transmission isn’t just about bandwidth—it also involves tuning frame size and port behavior. This episode explores jumbo frames, ...

Episode 109: Port Security — Limiting Access at the Switch Edge

20 Jul 2025

Contributed by Lukas

Port security helps prevent unauthorized devices from connecting to your network by enforcing MAC address restrictions at the switch port level. In th...

Episode 108: Port Configuration and Mirroring Essentials

20 Jul 2025

Contributed by Lukas

Switch ports are the front line of network configuration and monitoring, and this episode walks through the most essential port settings. You'll learn...

Episode 107: Port Aggregation with LACP

20 Jul 2025

Contributed by Lukas

This episode introduces port aggregation, which combines multiple physical links into a single logical connection to increase bandwidth and provide re...

Episode 106: Port Tagging and 802.1Q — Trunks and VLAN IDs

20 Jul 2025

Contributed by Lukas

This episode explains port tagging and the IEEE 802.1Q standard, which enables VLAN traffic to travel across trunk links between switches. Tagging add...

Episode 105: VLANs — Segmenting the Network with Data and Voice

20 Jul 2025

Contributed by Lukas

This episode introduces Virtual Local Area Networks (VLANs), which logically segment networks into separate broadcast domains on the same physical inf...

Episode 105: VLANs — Segmenting the Network with Data and Voice

20 Jul 2025

Contributed by Lukas

This episode introduces Virtual Local Area Networks (VLANs), which logically segment networks into separate broadcast domains on the same physical inf...

Episode 104: Bandwidth Management — Shaping and Prioritizing Traffic

20 Jul 2025

Contributed by Lukas

This episode explores bandwidth management techniques, including traffic shaping and prioritization. Shaping controls the flow of traffic to match ava...

Episode 102: Link-State and Hybrid Routing Protocols — OSPF, EIGRP, and BGP

20 Jul 2025

Contributed by Lukas

This episode examines link-state and hybrid routing protocols, including Open Shortest Path First (OSPF), Enhanced Interior Gateway Routing Protocol (...

Episode 101: Dynamic Routing Protocols — Distance Vector and RIP

20 Jul 2025

Contributed by Lukas

This episode introduces dynamic routing protocols, focusing on distance vector protocols such as Routing Information Protocol (RIP). Distance vector p...

Episode 100: Static Routing and Administrative Distance

20 Jul 2025

Contributed by Lukas

This episode focuses on static routing, where administrators manually configure routes, and the concept of administrative distance, which determines t...

Episode 99: Introduction to Routing — What It Does and Why It Matters

20 Jul 2025

Contributed by Lukas

This episode introduces routing, the process of directing packets between networks based on destination IP addresses. Routers use routing tables to de...

Episode 98: IoT and SCADA Systems — Small Devices, Big Impacts

20 Jul 2025

Contributed by Lukas

This episode examines Internet of Things (IoT) and Supervisory Control and Data Acquisition (SCADA) systems. IoT devices include sensors, cameras, and...

Episode 97: Networked Devices — VoIP Phones, Printers, and Controls

20 Jul 2025

Contributed by Lukas

This episode explores networked devices beyond standard workstations and servers. VoIP phones, network printers, and control systems are introduced as...

Episode 96: Firewalls — Stateful Inspection and Access Control

20 Jul 2025

Contributed by Lukas

This episode introduces firewalls, which enforce security policies by controlling traffic entering or leaving a network. It explains the difference be...

Episode 95: IPS and IDS Devices — Detecting and Stopping Attacks

20 Jul 2025

Contributed by Lukas

This episode explains Intrusion Detection Systems (IDS) and Intrusion Prevention Systems (IPS), which monitor network traffic for signs of malicious a...

Episode 94: Voice Gateways and VoIP Translation

20 Jul 2025

Contributed by Lukas

This episode introduces voice gateways, devices that translate between traditional telephony systems and modern Voice over IP (VoIP). They convert cir...

Episode 93: Modems, Media Converters, and Repeaters

20 Jul 2025

Contributed by Lukas

This episode covers modems, media converters, and repeaters, three devices that operate primarily at the physical layer. Modems modulate and demodulat...

Episode 92: Proxies and VPN Gateways — Secure Remote Access

20 Jul 2025

Contributed by Lukas

This episode explains the role of proxies and VPN gateways in securing and managing remote access. Proxies act as intermediaries between clients and e...

Episode 91: Load Balancers — Sharing the Traffic Load

20 Jul 2025

Contributed by Lukas

This episode introduces load balancers, devices or software that distribute network or application traffic across multiple servers. By balancing reque...

Episode 90: Access Points and Wireless LAN Controllers

20 Jul 2025

Contributed by Lukas

This episode explains the role of wireless access points (APs) and wireless LAN controllers (WLCs). Access points provide wireless connectivity to cli...

Episode 89: Hubs and Bridges — Legacy Devices Explained

20 Jul 2025

Contributed by Lukas

This episode introduces hubs and bridges, legacy devices that laid the foundation for modern switching. Hubs operate at Layer 1, repeating signals to ...

Episode 88: Routers — Path Decision Makers

20 Jul 2025

Contributed by Lukas

This episode focuses on routers, devices that operate at the Network Layer and make path decisions based on logical addressing. Routers examine destin...

Episode 87: Layer 3 Switches — When a Switch Becomes a Router

20 Jul 2025

Contributed by Lukas

This episode explains Layer 3 switches, which combine the high-speed switching of Layer 2 with the routing capabilities of Layer 3. These devices can ...

Episode 86: Layer 2 Switches — MAC Tables and Forwarding Decisions

20 Jul 2025

Contributed by Lukas

This episode introduces Layer 2 switches, which operate at the Data Link Layer and make forwarding decisions based on MAC addresses. Switches maintain...