All Episodes
Displaying 121 - 150 of 184 in total
Episode 121: Welcome to Domain 3 — Network Operations
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 provides ...
Episode 122: Performance Metrics, Sensors, and SNMP Basics
Monitoring network health begins with knowing what to measure—and how. In this episode, we cover the essential performance metrics that indicate how well a network is ...
Episode 123: Logging Essentials — Syslog, Auditing, and Interface Statistics
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’ll learn about Syslog...
Episode 124: Interface Errors and Environmental Factors — Early Detection
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 learn how to recogn...
Episode 125: Baselines and NetFlow — Measuring Network Health
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 create, maintain, an...
Episode 126: Change Management and System Life Cycle
Change is inevitable—but unplanned change can break your network. This episode walks you through the change management process, including how to propose, review, appro...
Episode 127: Incident Response, Disaster Recovery, and Business Continuity
When the worst happens, a well-prepared team can make all the difference. In this episode, we examine the roles of incident response, disaster recovery, and business c...
Episode 128: Standard Operating Procedures (SOPs)
Standard Operating Procedures are the rulebooks of a stable network environment. In this episode, we explain why SOPs matter, how they are developed, and what elements...
Episode 129: Security Hardening Policies — Passwords, DLP, and Device Access
Security begins with hardening the network against misuse and unauthorized access. In this episode, we review core hardening policies that every network should impleme...
Episode 130: Network Documentation — Physical, Logical, and Audit Reports
A well-documented network is easier to maintain, troubleshoot, and scale. In this episode, we explore the different types of network documentation, including physical ...
Episode 131: Business Agreements — NDAs, SLAs, MOUs
Networks don’t operate in a vacuum—they’re governed by agreements that define responsibilities, expectations, and legal protections. In this episode, we cover the thre...
Episode 132: Load Balancing, Multipathing, and NIC Teaming
High-availability and performance optimization often rely on distributing traffic across multiple paths or interfaces. This episode breaks down three related technolog...
Episode 133: Hardware Redundancy — Routers, Switches, and Facility Infrastructure
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 fault-tolerant infr...
Episode 134: Disaster Recovery Sites and Architectures (Cold, Warm, Hot, Cloud, Active)
Disaster recovery isn’t one-size-fits-all—different organizations require different levels of readiness. In this episode, we examine recovery site types, including col...
Episode 135: Diverse Paths and Internet Redundancy — Ensuring Availability
Redundancy isn’t just about hardware—it’s also about network paths. In this episode, we explore how having multiple physical and logical paths ensures internet and WAN...
Episode 136: VRRP and FHRP — Virtual Router Redundancy
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 Router Redundancy ...
Episode 137: Backup and Restore for Network Devices
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 procedures for routers, ...
Episode 138: Welcome to Domain 4 — Network Security
Domain 4 marks a transition from availability and performance into security—protecting the integrity and confidentiality of the network. In this episode, we introduce ...
Episode 139: The CIA Triad and Types of Network Threats
Every security strategy begins with the CIA Triad—Confidentiality, Integrity, and Availability. In this episode, we explore how these three principles guide all securi...
Episode 140 — Vulnerabilities, Exploits, and Exposure Concepts
This episode dives into the foundational security concepts of vulnerabilities, exploits, and exposures—terms that appear throughout the Network Plus exam and underpin ...
Episode 141: Principle of Least Privilege and RBAC
Security in networking isn’t just about blocking attacks—it’s about minimizing exposure by limiting what users and systems can access. In this episode, we examine the ...
Episode 142: Zero Trust and Defense in Depth Models
Zero Trust networking flips the traditional perimeter-based security model on its head. In this episode, we unpack the Zero Trust principle of “never trust, always ver...
Episode 143: Advanced Security Mechanisms — NAC, Honeypots, and Authentication Models
Beyond basic firewalls and access controls, advanced security mechanisms offer deeper visibility and proactive defense. In this episode, we explore Network Access Cont...
Episode 144: Centralized Authentication — TACACS+, RADIUS, SSO, and Directory Services
Centralized authentication simplifies user management while enhancing security. In this episode, we compare two core protocols—TACACS+ and RADIUS—and explain their rol...
Episode 145: Securing Access with 802.1X and EAP
802.1X is the gatekeeper of modern enterprise networks, ensuring only authenticated users and devices can connect. This episode explains how 802.1X works as a port-bas...
Episode 146: Risk Management, Security Assessments, and SIEM
Every security decision is about balancing risk, and in this episode, we dive into how organizations identify, measure, and manage those risks. You’ll learn the compon...
Episode 147: Denial-of-Service (DoS) and Distributed Denial-of-Service (DDoS) Attacks
Denial-of-Service attacks aim to disrupt services by overwhelming a system’s resources—and understanding how they work is key to protecting against them. This episode ...
Episode 148: On-Path Attacks and DNS Poisoning — Network Compromise Techniques
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 attackers insert themselv...
Episode 149: VLAN Hopping and Layer 2 Exploits
VLANs offer segmentation—but they’re not invulnerable. In this episode, we look at how attackers can bypass VLAN boundaries using VLAN hopping techniques like double-t...
Episode 150: ARP Spoofing, MAC Spoofing, and Rogue Devices
When devices pretend to be something they’re not, serious security problems can follow. This episode focuses on spoofing attacks—specifically ARP spoofing and MAC addr...