IT Security
Linux Networking and Security
This practical course helps professionals master Linux networking and security, firewalls, SSH, hardening, logging, access controls, and troubleshooting. The program connects key concepts, real use cases, risks, tools, and operational decisions so participants can apply the learning in their work environment. It can be tailored to the organization’s sector, internal systems, participant maturity, and performance objectives.
Objectives
- Understand the concepts, challenges, and use cases related to Linux networking and security, firewalls, SSH, hardening, logging, access controls, and troubleshooting.
- Identify the data, systems, processes, and stakeholders required for effective implementation.
- Assess risks, limitations, governance requirements, and practical control points.
- Use methods, tools, and templates to structure analysis and decision-making.
- Translate learning into action plans, recommendations, and measurable improvement opportunities.
- Adapt the approach to the operating context, team maturity, and business objectives.
Target audience
- Cybersecurity and IT security professionals
- SOC analysts, infrastructure teams, and operations teams
- Risk, audit, compliance, and governance professionals
- System, network, cloud, and OT administrators
- IT managers responsible for security posture
Program outline
A clear structure for the learning journey.
Outline points are grouped in one designed block instead of being treated as separate module cards.
01Linux Installation, Filesystem Layout, and Boot Process4 topics
- Foundation for Linux Installation, Filesystem Layout, and Boot Process: application, analysis, and review points linked to the module
- Terminology and decisions in Linux Installation, Filesystem Layout, and Boot Process: application, analysis, and review points linked to the module
- Inputs required for Linux Installation, Filesystem Layout, and Boot Process: application, analysis, and review points linked to the module
- Typical mistakes around Linux Installation, Filesystem Layout, and Boot Process: applied exercise and practical decision from a realistic scenario
02Users, Groups, Permissions, sudo, and Access Control4 topics
- Current-state mapping for Users, Groups, Permissions, sudo, and Access Control: application, analysis, and review points linked to the module
- Examples and scenarios involving Users, Groups, Permissions, sudo, and Access Control: application, analysis, and review points linked to the module
- Diagnostic questions about Users, Groups, Permissions, sudo, and Access Control: application, analysis, and review points linked to the module
- Evidence produced through Users, Groups, Permissions, sudo, and Access Control: applied exercise and practical decision from a realistic scenario
03Packages, Repositories, Services, and systemd4 topics
- Design considerations for Packages, Repositories, Services, and systemd: application, analysis, and review points linked to the module
- Roles and responsibilities in Packages, Repositories, Services, and systemd: application, analysis, and review points linked to the module
- Exceptions and constraints affecting Packages, Repositories, Services, and systemd: application, analysis, and review points linked to the module
- Quality checks for Packages, Repositories, Services, and systemd: applied exercise and practical decision from a realistic scenario
04Storage, LVM, Filesystems, Mounts, and Backup Basics4 topics
- Operating model for Storage, LVM, Filesystems, Mounts, and Backup Basics: application, analysis, and review points linked to the module
- Tools and workflow steps in Storage, LVM, Filesystems, Mounts, and Backup Basics: application, analysis, and review points linked to the module
- Handoffs and approvals around Storage, LVM, Filesystems, Mounts, and Backup Basics: application, analysis, and review points linked to the module
- Escalation points in Storage, LVM, Filesystems, Mounts, and Backup Basics: applied exercise and practical decision from a realistic scenario
05Linux Networking, Firewalls, DNS, SSH, and Remote Access4 topics
- Performance measures for Linux Networking, Firewalls, DNS, SSH, and Remote Access: application, analysis, and review points linked to the module
- Review routines after Linux Networking, Firewalls, DNS, SSH, and Remote Access: application, analysis, and review points linked to the module
- Improvement actions for Linux Networking, Firewalls, DNS, SSH, and Remote Access: application, analysis, and review points linked to the module
- Sustaining discipline around Linux Networking, Firewalls, DNS, SSH, and Remote Access: applied exercise and practical decision from a realistic scenario
06Security Hardening, SELinux, Logs, and Audit Controls4 topics
- Advanced scenarios in Security Hardening, SELinux, Logs, and Audit Controls: application, analysis, and review points linked to the module
- Failure patterns seen in Security Hardening, SELinux, Logs, and Audit Controls: application, analysis, and review points linked to the module
- Coordination challenges during Security Hardening, SELinux, Logs, and Audit Controls: application, analysis, and review points linked to the module
- Recovery actions for Security Hardening, SELinux, Logs, and Audit Controls: applied exercise and practical decision from a realistic scenario
07Performance, Processes, Troubleshooting, and Recovery4 topics
- Governance requirements for Performance, Processes, Troubleshooting, and Recovery: application, analysis, and review points linked to the module
- Data quality checks in Performance, Processes, Troubleshooting, and Recovery: application, analysis, and review points linked to the module
- Risk controls related to Performance, Processes, Troubleshooting, and Recovery: application, analysis, and review points linked to the module
- Value measures for Performance, Processes, Troubleshooting, and Recovery: applied exercise and practical decision from a realistic scenario
08Linux Administration Lab4 topics
- Implementation planning for Linux Administration Lab: application, analysis, and review points linked to the module
- Readiness questions before Linux Administration Lab: application, analysis, and review points linked to the module
- Pilot design for Linux Administration Lab: application, analysis, and review points linked to the module
- Lessons learned after Linux Administration Lab: applied exercise and practical decision from a realistic scenario
Materials provided
- ○ Slides used during the sessions
- ○ Group activities and practical exercises
- ○ Worksheets, checklists, and templates
- ○ Case studies relevant to the course
- ○ 4D Certificate of Completion issued by 4D Training & Consultancy
- ○ Post-course support for technical queries and guidance
Training Options
Programs can be delivered in-house, online, or in a blended format depending on your team's schedule, location, and learning objectives. When an external certificate or exam is included, certification rules and fees remain under the relevant awarding body's policies, while 4D provides the training and preparation support.
Why choose 4D
4D Training & Consultancy designs technical and professional programs around the client’s operating reality. The course can be adapted to sector requirements, internal systems, team capability, practical use cases, and the level of depth required by the audience.
Related courses
AI for SOC Analysts
This practical course helps professionals master AI for SOC analysts, alert enrichment, investigation support, detection tuning, reporting, and safe use controls. The program connects key concepts, real use cases, risks, tools, and operational decisions so participants can apply the learning in their work environment. It can be tailored to the organization’s sector, internal systems, participant maturity, and performance objectives.
View courseAI Security, Governance and Cyber Risk Management
This course helps security, risk, IT, and business teams understand how artificial intelligence changes the cyber risk landscape. Participants learn how to assess AI tools, protect sensitive data, manage AI-related vulnerabilities, define governance controls, and align AI adoption with cybersecurity and compliance requirements.
View courseAirport Cybersecurity for Networked Systems
This practical course helps professionals master airport cybersecurity for networked systems, access control, CCTV, passenger Wi-Fi, operational systems, and incident readiness. The program connects key concepts, real use cases, risks, tools, and operational decisions so participants can apply the learning in their work environment. It can be tailored to the organization’s sector, internal systems, participant maturity, and performance objectives.
View course