CyberCode Academy

Episode OverviewThis episode explores the strategic decisions behind configuring effective enterprise vulnerability assessments. It examines how security teams can evaluate infrastructure from multiple perspectives, configure reusable scanning policies, and use authenticated assessments to obtain deeper visibility into operating systems, databases, and applications. The episode also covers credent...

Episode OverviewThis episode moves from vulnerability management strategy into the practical implementation of enterprise vulnerability scanning. It examines the major scanning platforms used to identify security weaknesses, explains how to establish safe and effective assessment boundaries, and explores the configuration choices that determine the depth and perspective of a vulnerability assessme...

Episode OverviewThis episode explores the end-to-end foundations of a Vulnerability Management Program, moving from the identification of security weaknesses to risk-based prioritization, remediation, governance, and continuous improvement. Rather than treating vulnerability scanning as a one-time technical activity, the episode presents vulnerability management as an ongoing organizational proces...

Episode OverviewThis episode provides an end-to-end examination of network reconnaissance, organizational intelligence gathering, and defensive countermeasures. It explores how security professionals identify publicly exposed information, map digital and physical infrastructure, correlate intelligence from multiple sources, and recognize reconnaissance activity before it develops into a more serio...

Episode OverviewThis episode explores the fundamentals of DNS reconnaissance and network footprinting, examining how security professionals can use Internet addressing information and DNS infrastructure to build a clearer picture of an organization's external network. The discussion begins with the relationship between human-readable domain names and IP addresses, then moves into global IP address...

Episode OverviewThis episode explores the foundations of cybersecurity reconnaissance and network mapping, following the process from initial intelligence gathering to active network footprinting and topology visualization. It examines how security professionals identify systems and services, evaluate network boundaries, and build an understanding of complex infrastructure while maintaining clear...

Episode OverviewThis episode explores the core techniques and tools used to discover network infrastructure, identify exposed services, and build an accurate picture of host environments. It moves from active port scanning with Nmap and Zenmap to alternative discovery utilities and automated approaches, before transitioning to passive reconnaissance techniques used when direct probing is undesirab...

Episode OverviewThis episode explores the core methodologies used to assess, simulate, investigate, and strengthen cybersecurity defenses. It brings together three complementary areas of security operations: structured penetration testing, controlled adversary simulations, and reverse engineering for malware analysis. From evaluating an organization's external attack surface to conducting realisti...

Network Defense: Deception, Endpoint Hardening, and Security ManagementEpisode OverviewThis episode expands the network-defense model by examining two complementary areas of cybersecurity: defensive deception and enterprise endpoint security management. The first part introduces deception technologies such as honeypots and DNS sinkholes, showing how defenders can manipulate attacker behavior, coll...

Network Defense Fundamentals: Firewalls, DMZ Architecture, and Network Access ControlEpisode OverviewThis episode introduces the core principles of network defense, focusing on perimeter security, network segmentation, traffic filtering, and access management. The lesson begins with the role of firewalls at network boundaries and examines how organizations separate the public internet, internal ne...

Measuring and Managing Cybersecurity Risk: Likelihood, Assessment, and ControlsEpisode OverviewThis episode moves from identifying cybersecurity risks to understanding how organizations measure, prioritize, and manage those risks. Building on the previous discussion of threats, vulnerabilities, assets, likelihood, and impact, this lesson provides a practical framework for determining how significa...

Cybersecurity Risk Management: NIST SP 800-30 and Threat AssessmentEpisode OverviewThis episode explores the fundamentals of cybersecurity risk management through the NIST SP 800-30 risk assessment framework. Building on the previous episode's examination of assets, vulnerabilities, and threats, this lesson focuses on how organizations transform those concepts into a structured assessment of likel...

Cybersecurity Threat Management: Reconnaissance, the CIA Triad, and Risk FundamentalsEpisode OverviewThis episode introduces the foundational concepts of cybersecurity threat management associated with CySA+ Domain 1.The lesson begins with threat identification and reconnaissance, examining how security professionals collect information about systems, organizations, and potential attack surfaces t...

Data Center Virtualization and Secure Management ArchitectureEpisode OverviewModern data centers must provide both strong network isolation and reliable administrative access. In this episode, we explore two foundational aspects of data center architecture: Layer 3 network virtualization with Virtual Routing and Forwarding (VRF) and secure infrastructure management through inband and Out-of-Band (...

Data Center Network Architecture: Multi-Site VXLAN EVPN and Chassis VirtualizationEpisode OverviewModern data centers increasingly depend on virtualization at both the network and hardware layers. Overlay technologies such as VXLAN BGP EVPN allow organizations to build scalable multi-site fabrics that support workload mobility, Layer 2 extension, and multi-tenant Layer 3 routing. At the same time,...

Virtual Port Channel (vPC) Design: Architecture, Best Practices, and Advanced StrategiesEpisode OverviewHow can two physical Cisco Nexus switches provide a highly available, active-active connection to the same downstream device while maintaining Layer 2 loop prevention? Virtual Port Channel (vPC) provides a multi-chassis link aggregation architecture that allows two switches to present a coordina...

Designing Resilient Layer 3 Data Center Networks: Mobility, Convergence, and Service IntegrationEpisode OverviewModern data centers increasingly rely on routed Layer 3 fabrics to achieve the scalability, availability, and operational flexibility demanded by virtualized workloads. In this two-part episode, we explore the architecture behind resilient Layer 3 data center networks, focusing on three...

Layer 2 Data Center Design & Endpoint MobilityEpisode OverviewModern data center networks must do more than simply connect servers. They must support workload mobility, continuous availability, scalable architectures, and intelligent integration of network services. In this episode, we explore the architectural principles behind high-performance Layer 2 and data center fabrics, beginning with...

How can you determine whether a Linux server contains known security weaknesses—and how can you control the network traffic reaching those services? In this episode, we focus on two essential pillars of Linux server defense: proactive vulnerability assessment and active firewall protection. We begin with Nessus, exploring how vulnerability scanners identify operating systems, software versions, ex...

How do you know whether a Linux server is actually secure? Security professionals need more than preventive controls. They need the ability to monitor system activity, investigate suspicious behavior, audit sensitive resources, and verify what is exposed to the network. In this episode, we move from detailed internal auditing with the Linux Audit System to active network reconnaissance and firewal...

A secure Linux environment is only as effective as your ability to understand what is happening inside it. Servers continuously generate information about authentication attempts, system activity, application behavior, administrative actions, and security events. Without proper log management and auditing, this information can become difficult to analyze, consume valuable storage, or disappear ent...

This episode explores two essential components of enterprise Linux administration and security: centralized identity management and system logging. The lesson begins with the deployment of an Identity Management (IdM) Server, covering the process of establishing a centralized authentication and authorization environment. You will configure the server's hostname, Kerberos realm, time synchronizatio...

This episode explores essential Linux system-hardening techniques designed to protect both physical console access and remote administration interfaces. The lesson focuses on three practical security controls: disabling the Ctrl+Alt+Del reboot mechanism, protecting the GRUB bootloader with authentication, and configuring pre-login SSH warning banners. Together, these measures demonstrate how Linux...

This episode explores two fundamental components of Linux access control: group administration and Pluggable Authentication Modules (PAM).The lesson begins with practical group management, examining how administrators can organize users around shared resources and delegate specific group-management responsibilities without granting full root privileges. From there, the episode moves into the archi...

This episode provides a practical guide to strengthening Linux file system security, progressing from protecting shared directories against accidental or unauthorized deletions to implementing granular access controls and continuously monitoring system integrity. The lesson focuses on three essential Linux security mechanisms: the Sticky Bit, File Access Control Lists (FACL), and the Advanced Intr...